Paper 2 · Statistics
⏱ Tested in 1 exam question since 2018
Lesson 9 of 21
Statistics 9 – z-scores 1
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- Interpret a z-score as a number of standard deviations above or below the mean
- Read P(z ≤ a) for positive a from the standard normal tables on pages 36/37
- Use symmetry to state P(z ≤ 0) = 0.5 without a table lookup
Most recent exam questions
- 2026 P2 Q10(a)(i)
- 2018 P2 Q2(a)
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