Dr Vance is interested in exploring whether the depth of processing affects memory recall. He conducts an experiment where participants are asked to recall a list of 25 words after performing either semantic processing (rating the pleasantness of each word) or structural processing (identifying if the word is written in capital letters).
Table 1 shows the raw data from the study.
| Participant number | Number of words recalled (Semantic Processing) | Number of words recalled (Structural Processing) |
|---|---|---|
| 1 | 14 | 8 |
| 2 | 18 | 11 |
| 3 | 11 | 7 |
| 4 | 16 | 9 |
| 5 | 17 | 12 |
| 6 | 13 | 6 |
| 7 | 16 | 10 |
| 8 | 12 | 5 |
| 9 | 20 | 8 |
| 10 | 13 | 9 |
Calculate the standard deviation for the number of words recalled in the Semantic Processing condition. Show your working and give your answer to two decimal places.
Practise Edexcel A Level Psychology Research methods and skills with exam-style questions for A Level Psychology. 657 questions covering Research methods and skills, 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.
