An educational psychologist investigates whether a new mnemonic technique improves vocabulary retention. Two separate groups of students are used: Group A learns a list of 30 French words using the mnemonic, while Group B learns the same list using standard rote rehearsal. The score for each student is the number of words correctly recalled. The data are interval level and meet all assumptions required for a parametric test.
Which of the following is the most appropriate inferential test to use to analyse this data?
Related ttt-test
Wilcoxon Signed Ranks test
Mann-Whitney U test
Unrelated ttt-test
