Statistics 5.4.1. Discrete random variables: Probability distribution

(9709) CIE A Level Maths 2023 - 2025

1. Revision notes

Key concepts

1. discrete random variables
2. expected outcome / expectation: E(X), a.k.a. the mean
3. variance: Var(X) - the spread of values around the mean
   

2. Study Powerpoint

*or you can download it here.

* [PDF] Statistics formulae booklet (provided on exam)

3. Exercises (please click)

4. Solutions (please click)