Probability and Distributions

The rules for combining events, and the first probability models — discrete random variables and the binomial distribution. Covers DfE content areas M (probability) and N (statistical distributions).

• An Overview — the big idea, the language, the core techniques and the common mistakes

The content statements

• Probability and Venn Diagrams — mutually exclusive and independent events, the addition rule, Venn and tree diagrams
• The Binomial Distribution — discrete random variables, the discrete uniform distribution, B(n, p), cumulative probabilities and modelling assumptions

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Each page has step-by-step notes, several worked examples, a quick-reference grid and ten practice questions with fully worked solutions.