Correlation coefficients: OCR MEI A‑Level Further Maths questions

OCR MEI A-Level Further Maths past-paper questions on 5.1 Correlation coefficients, 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.

All 17 questions on Correlation coefficients, as a list

June 2025, Statistics Major, Q7 (13 marks): A student is investigating the relationship between different electricity generation methods and cost of electricity in a particular country. The student first
June 2025, Statistics Minor, Q6 (9 marks): A factory discharges very low concentrations of an inert chemical through an outfall into a nearby body of water. The concentration of the chemical is measured
June 2025, AS Statistics A, Q5 (9 marks): Two judges, Judge A and Judge B, independently rank 8 entries in a jam‑making competition, awarding each jam a rank from 1 (best) to 8 (worst). There are no tie
June 2024, Statistics Major, Q6 (11 marks): A student is investigating the relationship between age and grip strength in adults. The student selects 10 people and records their ages in years and the grip
June 2024, Statistics Minor, Q3 (13 marks): The scatter diagram below illustrates data concerning average annual income per person, $x, and average life expectancy, y years, for 45 randomly selected citie
June 2023, Statistics Major, Q6 (12 marks): A student wonders if there is any correlation between download and upload speeds of data to and from the internet. The student decides to carry out a hypothesis
June 2023, Statistics Minor, Q6 (10 marks): Each competitor in a lumberjacking competition has to perform various disciplines for which they are timed. A spectator thinks that the times for two of the dis
June 2023, AS Statistics A, Q5 (10 marks): Two practice GCSE examinations in mathematics are given to all of the students in a large year group. A teacher wants to check whether there is a positive relat
June 2022, Statistics Major, Q8 (14 marks): A swimming coach is investigating whether there is correlation between the times taken by teenage swimmers to swim 50 m Butterfly and 50 m Freestyle. The coach
June 2022, Statistics Minor, Q5 (14 marks): A medical researcher is investigating whether there is any relationship between the age of a person and the level of a particular protein in the person’s blood.
June 2022, AS Statistics A, Q3 (10 marks): A biology student is doing an experiment in which plants are inoculated with a particular microorganism in an attempt to help them grow. She is investigating wh
November 2021, Statistics Minor, Q4 (14 marks): A scientist is investigating sea salinity (the level of salt in the sea) in a particular area. She wishes to check whether satellite measurements, y, of salinit
November 2021, AS Statistics A, Q3 (9 marks): A student is investigating the link between temperature (in degrees Celsius) and electricity consumption (in Gigawatt-hours) in the country in which he lives. T
November 2020, Statistics Minor, Q5 (17 marks): A student is investigating immunisation. He wonders if there is any relationship between the percentage of young children who have been given measles vaccine an
November 2020, AS Statistics A, Q2 (12 marks): A researcher is investigating the concentration of bacteria and fungi in the air in buildings. The researcher selects a random sample of 12 buildings and measur
June 2019, Statistics Minor, Q5 (16 marks): A student wants to know if there is a positive correlation between the amounts of two pollutants, sulphur dioxide and PM10 particulates, on different days in th
June 2018, AS Statistics A, Q3 (12 marks): Samples of water are taken from 10 randomly chosen wells in an area of a country. A researcher is investigating whether there is any relationship between the le

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