In a study investigating verbal fluency skills, 20 introverts and 20 extroverts completed a word-generation task. The researchers obtained the following raw scores:
| Group | Verbal Fluency Scores |
|---|---|
| Introvert group | 12, 15, 18, 11, 9, 14, 16, 22, 13, 8, 17, 19, 15, 10, 14, 21, 16, 12, 7, 11 |
| Extrovert group | 16, 22, 14, 15, 18, 19, 10, 12, 16, 17, 21, 23, 11, 13, 15, 18, 20, 14, 9, 17 |
The mean verbal fluency score for both groups combined was 15.0.
What percentage of the introvert group scored above the combined mean score and what percentage of the extrovert group scored above the combined mean score? Show your calculations.
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.