A sports psychologist wants to compare the reaction times of two independent groups of athletes: 14 sprinters and 17 swimmers. Because the reaction time data contains extreme outliers, the psychologist decides to use a non-parametric test of difference, treating the data as ordinal.
Which of the following inferential statistical tests is the most appropriate to analyse this data?
Wilcoxon Signed Ranks test
Related t-test
Mann-Whitney U test
Sign test
513 exam-style questions on OCR A Level Psychology Data recording, analysis and presentation. Each one has a worked solution and a mark scheme showing where the marks go.