G2 Science K223, K224 and K225 evidence evaluation becomes stronger when different kinds of evidence converge on the same conclusion. Repeating one measurement many times can improve repeatability, but it is not the same as obtaining support through an independent method, control, representation or causal test.
This eighty-seventh Learner’s Guide develops converging-evidence triangulation. It is distinct from simply collecting more data. It builds on Vol 0061 Claim–Evidence Mapping, Vol 0079 Negative Evidence and Vol 0083 Diagnostic-Test Evidence.
The triangulation test
Ask whether the second piece of evidence could fail for a different reason from the first. If both depend on the same sensor, same assumption or same source, agreement may be duplication rather than independent convergence. Strong triangulation reduces the chance that one hidden error explains everything.
1. repeat measurement plus theory
In a case involving repeat measurement plus theory, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
2. graph trend plus table values
In a case involving graph trend plus table values, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
3. qualitative observation plus numerical sensor
In a case involving qualitative observation plus numerical sensor, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
4. direct measurement plus independent proxy
In a case involving direct measurement plus independent proxy, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
5. positive test plus valid control
In a case involving positive test plus valid control, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
6. negative test plus sensitive method
In a case involving negative test plus sensitive method, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
7. two different chemical tests
In a case involving two different chemical tests, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
8. two different biological indicators
In a case involving two different biological indicators, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
9. two different physical measurements
In a case involving two different physical measurements, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
10. model prediction plus measured trend
In a case involving model prediction plus measured trend, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
11. mechanism plus counterfactual
In a case involving mechanism plus counterfactual, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
12. cause manipulation plus control group
In a case involving cause manipulation plus control group, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
13. before-after plus comparison group
In a case involving before-after plus comparison group, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
14. dose response plus mechanism
In a case involving dose response plus mechanism, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
15. time course plus endpoint
In a case involving time course plus endpoint, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
16. microscopic evidence plus macroscopic outcome
In a case involving microscopic evidence plus macroscopic outcome, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
17. individual measurements plus group mean
In a case involving individual measurements plus group mean, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
18. mean plus distribution
In a case involving mean plus distribution, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
19. raw count plus normalised rate
In a case involving raw count plus normalised rate, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
20. two instruments with independent principles
In a case involving two instruments with independent principles, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
21. two observers plus instrument
In a case involving two observers plus instrument, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
22. visual evidence plus quantitative measure
In a case involving visual evidence plus quantitative measure, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
23. field observation plus controlled experiment
In a case involving field observation plus controlled experiment, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
24. small controlled study plus broad observational data
In a case involving small controlled study plus broad observational data, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
25. replication by different group
In a case involving replication by different group, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
26. replication under different conditions
In a case involving replication under different conditions, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
27. same direction across ranges
In a case involving same direction across ranges, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
28. same direction across representations
In a case involving same direction across representations, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
29. table and graph agreement
In a case involving table and graph agreement, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
30. calculation and graph agreement
In a case involving calculation and graph agreement, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
31. unit check plus magnitude check
In a case involving unit check plus magnitude check, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
32. conservation principle plus measurement
In a case involving conservation principle plus measurement, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
33. energy accounting plus observed motion
In a case involving energy accounting plus observed motion, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
34. mass accounting plus product evidence
In a case involving mass accounting plus product evidence, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
35. particle model plus state-change observation
In a case involving particle model plus state-change observation, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
36. circuit measurement plus component behaviour
In a case involving circuit measurement plus component behaviour, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
37. force reading plus motion data
In a case involving force reading plus motion data, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
38. temperature reading plus phase observation
In a case involving temperature reading plus phase observation, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
39. pH indicator plus reaction evidence
In a case involving pH indicator plus reaction evidence, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
40. gas test plus reaction stoichiometry
In a case involving gas test plus reaction stoichiometry, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
41. food test plus biological context
In a case involving food test plus biological context, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
42. enzyme assay plus product change
In a case involving enzyme assay plus product change, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
43. photosynthesis gas evidence plus light manipulation
In a case involving photosynthesis gas evidence plus light manipulation, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
44. respiration gas evidence plus organism activity
In a case involving respiration gas evidence plus organism activity, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
45. germination outcome plus condition control
In a case involving germination outcome plus condition control, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
46. transpiration mass loss plus environmental manipulation
In a case involving transpiration mass loss plus environmental manipulation, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
47. ecological count plus resource data
In a case involving ecological count plus resource data, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
48. population trend plus predator data
In a case involving population trend plus predator data, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
49. genetic pattern plus phenotype observation
In a case involving genetic pattern plus phenotype observation, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
50. structure evidence plus function response
In a case involving structure evidence plus function response, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
51. control group plus blank
In a case involving control group plus blank, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
52. positive control plus treatment result
In a case involving positive control plus treatment result, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
53. negative control plus treatment result
In a case involving negative control plus treatment result, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
54. repeatability plus calibration
In a case involving repeatability plus calibration, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
55. calibration plus known reference
In a case involving calibration plus known reference, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
56. sensitivity check plus negative result
In a case involving sensitivity check plus negative result, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
57. specificity check plus positive result
In a case involving specificity check plus positive result, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
58. anomaly analysis plus repeats
In a case involving anomaly analysis plus repeats, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
59. outlier investigation plus method log
In a case involving outlier investigation plus method log, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
60. conflicting evidence resolved by range
In a case involving conflicting evidence resolved by range, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
61. conflicting evidence resolved by timing
In a case involving conflicting evidence resolved by timing, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
62. conflicting evidence resolved by scale
In a case involving conflicting evidence resolved by scale, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
63. conflicting evidence resolved by definition
In a case involving conflicting evidence resolved by definition, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
64. independent evidence agreeing
In a case involving independent evidence agreeing, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
65. dependent evidence merely repeated
In a case involving dependent evidence merely repeated, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
66. same dataset shown twice
In a case involving same dataset shown twice, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
67. same measurement transformed twice
In a case involving same measurement transformed twice, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
68. two proxies sharing same bias
In a case involving two proxies sharing same bias, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
69. two tests sharing same reagent
In a case involving two tests sharing same reagent, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
70. two observers seeing same event
In a case involving two observers seeing same event, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
71. two independent causal interventions
In a case involving two independent causal interventions, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
72. prediction before data plus later observation
In a case involving prediction before data plus later observation, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
73. hypothesis plus risky prediction
In a case involving hypothesis plus risky prediction, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
74. failed prediction plus model revision
In a case involving failed prediction plus model revision, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
75. successful prediction plus independent replication
In a case involving successful prediction plus independent replication, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
76. negative evidence plus positive control
In a case involving negative evidence plus positive control, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
77. positive evidence plus negative control
In a case involving positive evidence plus negative control, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
78. no effect plus adequate sensitivity
In a case involving no effect plus adequate sensitivity, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
79. effect plus dose response
In a case involving effect plus dose response, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
80. plateau plus limiting-factor evidence
In a case involving plateau plus limiting-factor evidence, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
81. threshold plus below-threshold negatives
In a case involving threshold plus below-threshold negatives, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
82. saturation plus maximum-response evidence
In a case involving saturation plus maximum-response evidence, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
83. feedback model plus recovery observation
In a case involving feedback model plus recovery observation, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
84. adaptation model plus time-course data
In a case involving adaptation model plus time-course data, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
85. competing mechanisms plus discriminating observation
In a case involving competing mechanisms plus discriminating observation, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
86. causal chain plus removal test
In a case involving causal chain plus removal test, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
87. association plus mechanism evidence
In a case involving association plus mechanism evidence, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
88. association without mechanism
In a case involving association without mechanism, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
89. mechanism without matching data
In a case involving mechanism without matching data, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
90. strong data without causal design
In a case involving strong data without causal design, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
91. strong causal design with narrow scope
In a case involving strong causal design with narrow scope, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
92. broad data with weak control
In a case involving broad data with weak control, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
93. narrow precise data with strong control
In a case involving narrow precise data with strong control, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
94. two populations showing same relation
In a case involving two populations showing same relation, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
95. one population only
In a case involving one population only, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
96. multiple ranges showing same relation
In a case involving multiple ranges showing same relation, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
97. single narrow range
In a case involving single narrow range, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
98. multiple time points
In a case involving multiple time points, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
99. single endpoint
In a case involving single endpoint, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
100. multiple independent sources
In a case involving multiple independent sources, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
101. single repeated source
In a case involving single repeated source, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
102. convergent evidence final rule
In a case involving convergent evidence final rule, identify what each evidence stream contributes separately. One may establish the pattern, another the mechanism, another the causal direction, and another the validity of the measurement. Agreement matters most when the failure modes are genuinely different.
For practice, classify the pair as independent, partly dependent or duplicated. Then state one conclusion supported by both and one stronger conclusion that still is not justified. This prevents learners from treating quantity of evidence as automatically equivalent to quality of evidence.
Triangulation does not erase conflict
When independent evidence disagrees, the conflict is valuable. Compare range, timing, measurement definition, control quality and sensitivity. Do not average incompatible conclusions. The disagreement may reveal a boundary condition, method weakness or competing mechanism.
Links
Use the Science Hub, Vol 0065 Counterfactual Causality, Vol 0072 Verification Asymmetry, the Examination Craft hub and the PSLE Learner’s Guide.
Official-source discipline
For current K223–K225 assessment objectives and paper structure, use the official SEAB 2027 G2 syllabus directory and linked Science syllabus. If SEAB updates the syllabus, the current official document takes priority.
Final rule
More evidence is strongest when it is different evidence. Ask whether each stream has a distinct route from the world to the conclusion. When independent measurements, controls, mechanisms and predictions converge, confidence can rise without pretending that any single result proves more than it does.
