plumiCorrelation and regression: WJEC A‑Level Maths questions
WJEC A-Level Maths past-paper questions on 2.4 Correlation and regression, 2018–2025, with mark schemes and examiner’s reports where available. Add MadAsMaths questions to your practice, or browse them separately by topic and difficulty.
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All 9 questions on Correlation and regression, as a list
- Summer 2025, Unit 4, Q3 (8 marks): 3. A city councillor is investigating the decline in the number of bus drivers in the city. During her research, she finds an article claiming that delivery com
- Summer 2025, AS Unit 2, Q5 (11 marks): 5. The World Health Organisation (WHO) compiles data on life expectancy and other factors. A hobbyist statistician is exploring the data he collects from the WH
- Summer 2023, Unit 4, Q5 (7 marks): 5 A medical researcher is investigating possible links between diet and a particular disease. She selects a random sample of 22 countries and records the averag
- Summer 2022, Unit 4, Q5 (8 marks): 5 A government statistician wishes to investigate whether there is positive correlation between the variables Average score in the National Reading Test and Ave
- Summer 2022, AS Unit 2, Q4 (7 marks): 4 Jessica is studying the relationship between hip girth, h cm, and thigh girth, t cm, for American adults who are physically active. She takes a random sample
- Summer 2019, Unit 4, Q5 (9 marks): 5 A bowling alley manager in the UK is concerned about falling revenues. He collects data from the United States, hoping to use what he finds to revive his busi
- Summer 2019, AS Unit 2, Q5 (6 marks): 5 Huw investigates the opinion of the public about their local primary schools. He visits his town centre and administers a questionnaire to 120 people over the
- Summer 2018, Unit 4, Q5 (8 marks): 5 Rebecca is a farmer who is monitoring prices for products to use on her farm. She records the prices of two products made from different grains, wheat and oat
- Summer 2018, AS Unit 2, Q5 (6 marks): 5 A baker is aware that the pH of his sourdough, y, and the hydration, x, affect the taste and texture of the final product. The hydration is measured in ml of
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