A researcher investigated proactive interference using an independent groups design.
In Condition X, 10 participants learnt a list of 20 words (List 2) after previously learning 4 similar lists (List 1, List A, List B, List C).
In Condition Y, another 10 participants learnt List 2 without learning any prior lists.
The results for Condition X are shown below.
Table 1
| Participant | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
|---|---|---|---|---|---|---|---|---|---|---|
| Number of words recalled | 5 | 7 | 6 | 4 | 19 | 8 | 5 | 6 | 7 | 5 |
The researcher decided to use the mean to analyse the results.
Suggest a more appropriate measure of central tendency for this data set and explain why it would be more appropriate.
235 exam-style questions on AQA A Level Psychology Data handling and analysis. Each one has a worked solution and a mark scheme showing where the marks go.