Dr. Vance is researching whether a structured retrieval practice technique (using flashcards) improves the retention of technical vocabulary in a foreign language compared to passive rereading.
Dr. Vance selected 10 students: 5 in Group 1 (passive rereading) and 5 in Group 2 (retrieval practice). Dr. Vance predicted that students using retrieval practice would recall more vocabulary terms than those using passive rereading.
Dr. Vance decided to perform a Mann-Whitney U test to determine whether retrieval practice had a significant effect on vocabulary recall. Table 5 shows the scores and their ranks.
Complete Table 5 and calculate the Mann-Whitney U value for this data.
| Passive Rereading (Group 1) | Retrieval Practice (Group 2) | ||
|---|---|---|---|
| Vocabulary Recall Score | Rank | Vocabulary Recall Score | Rank |
| 8 | 1.0 | 12 | 5.0 |
| 11 | 3.5 | 13 | 6.5 |
| 10 | 2.0 | 15 | 9.0 |
| 11 | 3.5 | 14 | 8.0 |
| 13 | 6.5 | 16 | 10.0 |
| Total (R1R_1R1) | Total (R2R_2R2) |
638 exam-style questions on Edexcel A Level Psychology Methods. Each one has a worked solution and a mark scheme showing where the marks go.