Dr. Aris carried out a cognitive psychology experiment investigating the effect of haptic feedback on spatial reasoning. He tested 10 participants on a 3D block assembly task under two conditions: Condition A (without haptic feedback) and Condition B (with haptic feedback). Dr. Aris decided to carry out a statistical analysis on the number of structural errors made by each participant using a Wilcoxon Signed Ranks test.
Complete Table 1 and calculate the observed value of T T\,T for Dr. Aris's data.
Table 1
| Participant | Number of errors in Condition A (without haptic feedback) | Number of errors in Condition B (with haptic feedback) | Difference | Rank | Rank if positive | Rank if negative |
|---|---|---|---|---|---|---|
| A | 14 | 10 | ||||
| B | 11 | 11 | ||||
| C | 15 | 12 | ||||
| D | 9 | 10 | ||||
| E | 18 | 13 | ||||
| F | 12 | 14 | ||||
| G | 16 | 11 | ||||
| H | 13 | 7 | ||||
| I | 10 | 12 | ||||
| J | 17 | 9 | ||||
| Total: |
186 exam-style questions on Edexcel A Level Psychology Research methods and skills, covering Research methods and skills. Each one has a worked solution and a mark scheme showing where the marks go.