An environmental scientist is investigating the relationship between the altitude, hhh in kilometres above sea level, and the average concentration of a greenhouse gas, CCC in parts per million (ppm).
They collect a random sample of 45 atmospheric measurements at various altitudes, recording both the altitude and the gas concentration at each location.
Which statistical test would be most suitable to investigate whether there is a linear relationship between these two variables?
With reference to this investigation, explain three reasons for your choice of test.
121 exam-style questions on AQA A Level Psychology Inferential testing (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.