Amara conducted a cognitive psychology experiment to investigate the effect of environmental noise on short-term memory recall. In Condition A, participants recalled a list of words in quiet conditions. In Condition B, participants recalled a similar list of words with background speech playing.
Table 1 shows the results of the study.
| Participant | Number of items recalled in Condition A (Silence) | Number of items recalled in Condition B (Background speech) |
|---|---|---|
| A | 6 | 5 |
| B | 5 | 4 |
| C | 7 | 5 |
| D | 3 | 2 |
| E | 6 | 5 |
| F | 4 | 3 |
| G | 11 | 6 |
| H | 7 | 5 |
| I | 3 | 2 |
| J | 3 | 2 |
| K | 8 | 6 |
| L | 4 | 2 |
| TOTAL | 67 | 47 |
Calculate the measures of central tendency for the data Amara collected for participant recall in Condition A, and complete Table 2 with your answers.
| Mean number of items recalled in Condition A (to two decimal places) | Median number of items recalled in Condition A | Mode number of items recalled in Condition A |
|---|---|---|
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.
