Marcus collated the data from his closed questions regarding a workplace wellness scheme. His results are shown in Table 1.
| Attended mindfulness session | Did not attend mindfulness session | |
|---|---|---|
| Stress levels reduced | 28 | 12 |
| Stress levels unchanged or increased | 14 | 26 |
State two reasons why Marcus used the chi-squared test on his data.
638 exam-style questions on Edexcel A Level Psychology Methods. Each one has a worked solution and a mark scheme showing where the marks go.