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Correlation coefficient — AQA GCSE Statistics Definition

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Statistics
Key terms
Correlation coefficient

GCSE Statistics · key term

Correlation coefficient

Definition

A number between $-1$ and $1$ describing a correlation. Its sign indicates direction, while its size, ignoring the sign, indicates strength.

Used by AQA

How each exam board covers it

AQA GCSE Statistics · 8382

Specification 3.5.20, 3.5.24 · Paper 1, Paper 2

Revise: Correlation Strength
A number between −1 and 1 describing the direction and strength of a particular type of relationship between two variables.
Revise: Correlation Coefficient Comparisons

AQA Statistics past papers

Related key terms

Correlation strength
Linear relationship
No correlation
Pearson’s product moment correlation coefficient
Rank

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Spearman’s rank correlation coefficient

Strong correlation

Weak correlation