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Home
Statistics
Key terms
Cumulative probability

GCSE Statistics · key term

Cumulative probability

Definition

The probability that a random variable is less than or equal to a specified value, such as $P(X\leq r)$ .

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

Exam tips

1
Check whether a calculator output is an exact probability or a cumulative probability. Keep full precision until the final answer.

Related key terms

Binomial distribution
Expected value
Failure
Independent trials
Random variable

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Cumulative probability — Edexcel GCSE Statistics Definition | GradeGen