H2 Maths Notes (JC 1-2): 6.2) Discrete Random Variables
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): 6.2) Discrete Random Variables cover?
A: Expectation, variance, binomial modelling, and calculator workflows for H2 discrete distributions.
Study cadence
Re-derive the expectation and variance formulas from first principles once per week so you remember why each term appears. Keep a small table template in your notes for probability mass functions (PMFs) so you can slot in values quickly during exams.
Status: SEAB H2 Mathematics (9758, first exam 2026) syllabus last checked 2026-01-13 (PDF last modified 2024-10-16). Topic 6.2 is assessed in Paper 2 Section B (Probability & Statistics, 60 marks) and focuses on discrete distributions and the binomial model.
Core Concepts
- A discrete random variable takes countable values
