Skip to content

Loading…

Home
Subjects
Past papers
Key terms
Pricing

My courses

Select your courses

Loading…

Subjects

History
Geography
Biology
Chemistry
Physics
Combined Science
Mathematics
Classics
Business
Computer Science
Religious Studies
Statistics
Physical Education
Design and Technology
Food Preparation and Nutrition

Resources

Browse courses
Past papers
Key terms & definitions
Pricing

About

Sign up
Log in
Privacy Policy
Terms of Service

© 2026 GradeGen

Not affiliated with any exam board.

Home
Statistics
Key terms
Random variable

GCSE Statistics · key term

Random variable

Definition

A numerical quantity whose value depends on the outcome of a random experiment. In a binomial model, $X$ counts successes.

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
Expected value
Failure
Independent trials

Revise Statistics with GradeGen

Create a free account to read GCSE Statistics revision notes for your exam board and track your progress.

Sign Up to Start Revising Log In

Random variable — Edexcel GCSE Statistics Definition | GradeGen