A psychologist investigated whether working with background music affects concentration. Eight participants completed a concentration task under two conditions: once in silence and once with low-tempo background music. Their concentration levels were rated on a scale of 1 to 10 (where 10 indicates very high concentration).
Complete Table 2 and calculate the Wilcoxon Signed Ranks T T\,T value for this study.
Table 2: Concentration ratings in silence and with music
| Participant | Concentration in Silence | Concentration with Music | Difference | Rank of Difference (ignoring sign) | Rank if positive | Rank if negative |
|---|---|---|---|---|---|---|
| A | 6 | 8 | ||||
| B | 9 | 5 | ||||
| C | 5 | 5 | ||||
| D | 8 | 7 | ||||
| E | 3 | 6 | ||||
| F | 7 | 2 | ||||
| G | 4 | 5 | ||||
| H | 8 | 2 | ||||
| Total: |
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.