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Expected value — Edexcel GCSE Statistics Definition | GradeGen

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Statistics
Key terms
Expected value

GCSE Statistics · key term

Expected value

Definition

The long-run average value of a random variable over many repetitions. For $X\sim B(n,p)$ , the expected value is $np$ .

Used by Edexcel

How each exam board covers it

Edexcel GCSE Statistics · 1ST0

Specification 3p.11 · Paper 1, Paper 2

Revise: Characteristics of a binomial distribution

Edexcel Statistics past papers

Related key terms

Binomial distribution
Cumulative probability
Failure
Independent trials
Random variable

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