Levene's test is a statistical procedure used to assess the validity of the homogeneity of variance assumption required for parametric tests such as ANOVA and independent t-tests. The core principle involves transforming original observations into absolute deviations from group means (or medians) before calculating an F-statistic derived from Analysis of Variance on these transformed data points. This test formally determines whether multiple groups exhibit significantly different variances, thereby serving as a prerequisite diagnostic for the robustness of subsequent inferential analyses within parametric statistics.
Levene's test is a statistical procedure used to assess the validity of the homogeneity of variance assumption required for parametric tests such as ANOVA and independent t-tests. The core principle …