ANOVA -short for Analysis Of Variance- tests if 3+ population means are all equal or not.
This simple introduction gently walks you through its basics such as sums of squares, effect size, post hoc tests and more.
Levene’s test examines if 2+ populations have equal variances on some variable. This condition -known as the homogeneity of variance assumption- is required by t-tests and ANOVA.
So how to run and interpret this test in SPSS? This simple tutorial quickly walks you through.