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.
Practise Edexcel A Level Psychology Methods with exam-style questions for A Level Psychology. 100 questions, 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.