H2 Maths Notes (JC 1-2): 6.3) Normal Distribution

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07 Oct 2025, 00:00 Z

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Marcus Pang·Managing Director (Maths)

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Q: What does H2 Maths Notes (JC 1-2): 6.3) Normal Distribution cover?
A: Standardisation, symmetry, continuity corrections, and calculator workflows for normal models in the 2026 H2 Maths syllabus.

Before you revise
Refresh the discrete distribution rules (binomial, Poisson) so you know when normal modelling is appropriate. Bookmark the GC normal menu (normalcdf, invNorm) and keep a sketch pad handy-exam scripts still expect hand-drawn bell curves with shaded regions.

Status: SEAB H2 Mathematics (9758, first exam 2026) syllabus last checked 2025-11-29 (PDF last modified 2024-10-16). Topic 6.3 scope unchanged; Section B still contributes 30 marks per paper (Probability & Statistics).

Core Concepts

• A continuous random variable $X$ has the normal distribution $X \sim \mathcal{N}(\mu, \sigma^2)$ if its density is bell-shaped, centred at $\mu$