Dr. Aris investigated spatial working memory errors in patients with localized cerebellar damage. Five patients completed a virtual maze navigation task, and the researcher recorded the number of directional errors each participant made during the session.
Calculate the standard deviation for the maze error scores using the data in Table 1. Show your working and give your answer to two decimal places.
Table 1: Maze error scores for five cerebellar damage patients
| Patient | Directional errors |
|---|---|
| P1 | 5 |
| P2 | 8 |
| P3 | 11 |
| P4 | 12 |
| P5 | 14 |
Practise Edexcel A Level Psychology Methods with exam-style questions for A Level Psychology. 638 questions, matched to the Edexcel A Level Psychology (9PS0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.