Levene’s test for Equality of Variance

T-Test for equality of Means

F

Sig

T

Df

Sig. (2-tailed)

Mean Difference

Std. Error Difference

95% Confidence interval of the Difference

Conc.

Equal Variance

0.013

0.91

0.455

68

0.651

0.07829

0.17207

−0.2651

0.42165

Equal Variance not

0.455

64.527

0.651

0.07829

0.17207

0.2654

0.42199