| Levene’s Test for Equality of Variances | t-test for Equality of Means | |||||
Perceived quality |
| F | Sig. | t | Sig. (2-tailed) | Mean Difference | Std. Error Difference |
PD days | Equal var. assumed | 1.308 | 0.256 | 0.635 | 0.527 | 0.03941 | 0.06204 |
Equal var. not assumed |
|
| 0.601 | 0.551 | 0.03941 | 0.06562 | |
Teacher supervision | Equal var. assumed | 0.077 | 0.782 | −1.502 | 0.137 | −0.09909 | 0.06598 |
Equal var. not assumed |
|
| −1.482 | 0.144 | −0.09909 | 0.06684 | |
Teacher evaluation | Equal var. assumed | 5.578 | 0.021 | 0.173 | 0.863 | 0.00862 | 0.04981 |
Equal var. not assumed |
|
| 0.162 | 0.872 | 0.00862 | 0.05310 | |
Group lessons | Equal var. assumed | 0.119 | 0.731 | −1.198 | 0.235 | −0.06122 | 0.05111 |
Equal var. not assumed |
|
| −1.208 | 0.232 | −0.06122 | 0.05069 | |
Demonstration lessons | Equal var. assumed | 2.332 | 0.131 | −1.180 | 0.242 | −0.09754 | 0.08267 |
Equal var. not assumed |
|
| −1.242 | 0.219 | −0.09754 | 0.07855 |