Researchers investigated whether there is an association between classroom seating layout (Rows, Horseshoe, or Groups) and the level of student engagement (High or Low) during mathematics lessons.
The calculated value of chi-square (χ2\chi^2χ2) is 7.145. For this study, the degrees of freedom (dfdfdf) = 2.
Write the significance statement at the 5% level of probability for this study, using the table of critical values below.
| Degrees of freedom (dfdfdf) | p=0.5p = 0.5p=0.5 | p=0.05p = 0.05p=0.05 | p=0.01p = 0.01p=0.01 |
|---|---|---|---|
| 1 | 0.455 | 3.841 | 6.635 |
| 2 | 1.386 | 5.991 | 9.210 |
| 3 | 2.366 | 7.815 | 11.345 |
| 4 | 3.357 | 9.488 | 13.277 |
| 5 | 4.351 | 11.070 | 15.086 |
513 exam-style questions on OCR A Level Psychology Data recording, analysis and presentation. Each one has a worked solution and a mark scheme showing where the marks go.