> leveneTest(gpa$gpaimpr~gpa$gender, data=gpa,center=mean)
Levene's Test for Homogeneity of Variance (center = mean) Df F value Pr(>F)
group 1 7.09 0.01* 58
---
Signif. codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1 > leveneTest(gpa$gpaimpr~method, data=gpa,center=mean) Levene's Test for Homogeneity of Variance (center = mean)
Df F value Pr(>F)
group 2 1.94 0.15
57
> #running Levene's test for assumption of HOV (INTERACTION EFFECT)
> leveneTest(gpa$gpaimpr, interaction(gpa$gender,gpa$method),center=mean) Levene's Test for Homogeneity of Variance (center = mean)
Df F value Pr(>F)
group 5 0.57 0.72
54