The only change from the Levene’s test is that it constructs the transformed variable Z in a slightly different way, using deviations from the group medians rather than deviations from the group means...The only change from the Levene’s test is that it constructs the transformed variable Z in a slightly different way, using deviations from the group medians rather than deviations from the group means. Regardless of whether you’re doing the standard Levene test or the Brown-Forsythe test, the test statistic – which is sometimes denoted F, but sometimes written as W – is calculated in exactly the same way that the F-statistic for the regular ANOVA is calculated, just using a Z ik
The only change from the Levene’s test is that it constructs the transformed variable Z in a slightly different way, using deviations from the group medians rather than deviations from the group means...The only change from the Levene’s test is that it constructs the transformed variable Z in a slightly different way, using deviations from the group medians rather than deviations from the group means. Regardless of whether you’re doing the standard Levene test or the Brown-Forsythe test, the test statistic – which is sometimes denoted F, but sometimes written as W – is calculated in exactly the same way that the F-statistic for the regular ANOVA is calculated, just using a Z ik
