plumiCorrelation and regression: WJEC A‑Level Further Maths questions
Every WJEC A-Level Further Maths exam question on 2.4 Correlation and regression, 2018–2025, with its mark scheme and examiner’s report.
Paper
All papers
Exam
All years
All 11 questions on Correlation and regression, as a list
- Summer 2025, AS Unit 2, Q2 (7 marks): 2. The scatter diagram below shows the price (£y) and the number of pieces (x) for a random sample of 14 building-block sets. Price versus Number of pieces 250
- Summer 2025, AS Unit 2, Q4 (11 marks): 4. A judge at a triple jump competition wants to test whether there is an association between the height of a male athlete and the greatest distance he jumps. (
- Summer 2024, AS Unit 2, Q4 (12 marks): 4. An author poses the following question: Does using cash for transactions affect people’s financial behaviour? She collects data on ‘Cash transactions as a %
- Summer 2023, AS Unit 2, Q2 (8 marks): ∑ and x = 420 2. For a set of 30 pairs of observations of the variables x and y, it is known that ∑ y = 240 . The least squares regression line of y on x passes
- Summer 2023, AS Unit 2, Q5 (12 marks): 5. (a) Give two circumstances where it may be more appropriate to use Spearman’s rank correlation coefficient rather than Pearson’s product moment correlation c
- Summer 2022, AS Unit 2, Q2 (11 marks): 2. An economist suggested the rate of unemployment and the rate of wage inflation are independent. Amy sets about investigating this suggestion. She collects un
- Summer 2022, AS Unit 2, Q7 (7 marks): 7. Data from a large dataset shows the percentage of children enrolled in secondary education and the percentage of the adult population who are literate. The f
- Summer 2019, AS Unit 2, Q1 (7 marks): 1. (a) Sketch a scatter diagram of a dataset for which Spearman’s rank correlation coefficient is +1, but the product moment correlation coefficient is less tha
- Summer 2019, AS Unit 2, Q6 (6 marks): 6. The University of Arizona surveyed a large number of households. One purpose of the survey was to determine if annual household income could be predicted fro
- Summer 2018, AS Unit 2, Q4 (9 marks): 4. On a Welsh television game show, contestants are asked to guess the weights of a random sample of seven cows. The game show judges want to investigate whethe
- Summer 2018, AS Unit 2, Q7 (7 marks): 7. A university professor conducted some research into factors that affect job satisfaction. The four factors considered were Interesting work, Good wages, Job
Questions, mark schemes and examiner’s reports are © WJEC CBAC Ltd, from their published past papers. Plumi isn’t affiliated with any exam board. Want whole papers? Every WJEC A-Level Further Maths paper.
Rather write your answers by hand on iPad? Plumi marks them against the same mark schemes.