Calculate the standard deviation for the participants undergoing Cognitive Behavioural Therapy (CBT) using the resilience scores data in Table 1. Show your working and give your answer to one decimal place.
Table 1: Resilience scores for 5 CBT participants
| Participant | Resilience score |
|---|---|
| A | 12 |
| B | 16 |
| C | 18 |
| D | 20 |
| E | 24 |
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.