Which of these would be the appropriate inferential test to use to analyse the data in a study investigating the difference in memory recall scores (out of 20, treated as ordinal) between two separate groups of participants (one group who slept for 8 hours and another who slept for 4 hours)?
Chi-Square
Mann-Whitney U test
Spearman's Rho
Wilcoxon Signed Ranks test
644 exam-style questions on OCR A Level Psychology Research methods and techniques. Each one has a worked solution and a mark scheme showing where the marks go.