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