Category: Science
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PSLE Science Reality Lab Vol No.124 | “p = 0.04” — Does That Mean There Is a 96% Chance the Claim Is True?
A Primary 5/6 PSLE Science Reality Lab guide to p-values in scientific reports: learn why p = 0.04 is not a 96% probability that a claim is true, and what evidence questions should come next.
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PSLE Science Reality Lab Vol No.123 | “A 100-Year Flood Happened Last Year” — Are We Safe for the Next 99 Years?
A Primary 5/6 PSLE Science Reality Lab guide to recurrence intervals: learn why a “100-year flood” means an annual probability, not a once-per-century appointment or a 99-year safety guarantee.
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PSLE Science Reality Lab Vol No.122 | “30% Chance of Rain” — Does That Mean It Will Rain for 30% of the Day or Over 30% of the Area?
A Primary 5/6 PSLE Science Reality Lab guide to weather probabilities: learn what a 30% chance of rain does—and does not—say about time, area, intensity and certainty.
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PSLE Science Reality Lab Vol No.121 | “The Process Is In Control” — Does That Mean Every Product Meets the Specification?
A massive Primary 5/6 PSLE Science Reality Lab guide to quality-control charts: learn why a stable process can still make unacceptable products and why specification limits are not the same as control limits.
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PSLE Science Reality Lab Vol No.120 | “It Was Still Working When the 1,000-Hour Test Ended” — Is Its Lifetime Exactly 1,000 Hours?
A massive Primary 5/6 PSLE Science Reality Lab guide to durability claims: learn why an item still working when a test stops has survived at least that long, not necessarily failed at that exact time.
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PSLE Science Reality Lab Vol No.119 | “We Retested Only the Lowest Results, and They Improved” — Could Selection Alone Create the Pattern?
A massive Primary 5/6 PSLE Science Reality Lab guide to extreme-result selection and retesting: learn why unusually low or high first measurements can look less extreme later even without an effective intervention.
