The table shows the mean number of words recalled in three conditions.
| Condition | Mean recall |
|---|---|
| Silence | 16 |
| Instrumental music | 14 |
| Speech | 9 |
Give two conclusions that can be drawn from these means and one limitation of using only the means.
72 exam-style questions on Edexcel GCSE Psychology 11.2 Data analysis, covering 11.2.1 Arithmetic and numerical computation, 11.2.2 Descriptive statistics, 11.2.3 Tables, charts and graphs, 11.2.4 Primary and secondary data, and 11.2.5 Qualitative and quantitative data. Each one has a worked solution and a mark scheme showing where the marks go.