GCSE Maths: Comparing Distributions
Compare two or more datasets using statistical measures. Practise it with adaptive questions for AQA, Edexcel, OCR and Eduqas.
What you need to know
The concepts examiners test on comparing distributions, and what each one is really asking.
Where marks get lost
The exam technique that separates a correct method from a correct answer.
- Listing the numbers without comparing them or interpreting them
- Using the word 'consistent' incorrectly (lower spread/IQR = MORE consistent)
- Comparing two averages instead of one average and one measure of spread
Comparing Distributions questions students ask
Is Comparing Distributions on the Foundation paper?
Yes. Comparing Distributions appears at both Foundation and Higher tier, though Higher papers take it further.
What should I know before starting Comparing Distributions?
It builds on Averages and Box plots. If those feel shaky, practise them first — Comparing Distributions questions assume them.
What is the most common mistake in Comparing Distributions?
Listing the numbers without comparing them or interpreting them.
Which exam boards cover Comparing Distributions?
All four we support — AQA, Edexcel, OCR and Eduqas. GCSE Maths subject content is set by the DfE, so the topic is common to every board; what changes is the paper structure and the grade boundaries.