A researcher investigated whether there is a difference in self-reported stress levels (measured on a scale of 1 to 20) between office workers who took a 30-minute outdoor walk (Group A) and those who spent 30 minutes resting indoors (Group B). The data gathered was non-normally distributed.
Identify the statistical test that should be used to analyse the data from this study. Give 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.