Levene’s Test for Equality of Variances | t-test for Equality of Means | |||||||||
---|---|---|---|---|---|---|---|---|---|---|

F | Sig. | t | Df | Sig. (2-tailed) | Mean Difference | Std. Error Difference | 95% Confidence Interval of the Difference | |||

Lower | Upper | |||||||||

Pretest | Equal variances assumed | 4.43 | .042 | 1.05 | 38 | .300 | .150 | .14 | −.13 | .43 |

Equal variances not assumed | 1.05 | 36.88 | .300 | .150 | .14 | −.139 | .439 | |||

Posttest | Equal variances assumed | 1.04 | .313 | 5.42 | 38 | .000 | 2.65 | .48 | 1.66 | 3.63 |

Equal variances not assumed | 5.42 | 37.51 | .000 | 2.65 | .48 | 1.66 | 3.63 |