H2 Maths Notes (JC 1-2): 6.4) Sampling

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07 Oct 2025, 00:00 Z

Reviewed by

Marcus Pang·Managing Director (Maths)

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Q: What does H2 Maths Notes (JC 1-2): 6.4) Sampling cover?
A: Sample mean distributions, Central Limit Theorem (CLT), and unbiased-estimation workflows aligned with the H2 Maths 2026 syllabus.

Before you revise
SEAB labels sub-topic 6.4 Sampling as “for teaching and learning only”, but the core ideas (sample mean, $E(\bar{X})$, $\operatorname{Var}(\bar{X})$, CLT) are exactly what you use inside 6.5 Hypothesis Testing. Recap mean/variance notation and get comfortable computing $\bar{x}$