Table 6.

Levene’s error variance equality test.

		Levene Statistic	df1	df2	Sig.
Tensile bond strength residuals a	Based on average	3.910	15	272	<0.001
	Based on median	2.752	15	272	<0.010
	Based on median with gl adjusted	2.752	15	172.155	<0.011
	Based on trimmed average	3.701	15	272	<0.001

Tests the null hypothesis that the variance of the error of the dependent variable is the same between groups. ^a Dependent variable: residual for tensile bond strength.