A marine biologist is investigating whether there is a linear relationship between the sea water temperature, TTT (in degrees Celsius), and the dissolved oxygen concentration, DDD (in mg/L). They take measurements from 18 randomly selected locations at a specific depth. The biologist intends to represent the data on a scatter diagram.
Suggest an appropriate statistical test to analyse the data in this investigation. With reference to the study, outline two 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.