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.

Experimental probability — Edexcel GCSE Statistics Definition | GradeGen

Home
Statistics
Key terms
Experimental probability

GCSE Statistics · key term

Experimental probability

Definition

An estimate of probability calculated as $\frac{\text{frequency of the event}}{\text{total number of trials}}$ ; also called relative frequency.

Used by Edexcel

How each exam board covers it

Edexcel GCSE Statistics · 1ST0

Specification 3p.05, 3p.06, 3p.10 · Paper 1, Paper 2

Revise: Experimental data versus theoretical predictions
An estimate of an event's probability calculated by dividing the number of times the event occurred by the total number of trials. It is also called relative frequency.
Revise: Experimental and theoretical probability trends
An estimate of probability calculated from results: . Also called relative frequency.

Exam tips

1
Say that experimental probability tends towards theoretical probability, not that it must get closer after every trial or eventually equal it exactly.

Related key terms

Theoretical probability
Bias
Expected frequency
Observed frequency
Random variation

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

\frac{\text{observed frequency of the event}}{\text{number of trials}}

\frac{observed frequency of the event}{number of trials}

Revise: Bias in experimental and theoretical values

Edexcel Statistics past papers

Population parameter