You can test this assumption in PROC GLM by using the HOVTEST option in the MEANS statement, requesting a homogeneity of variance test. This section discusses the computational details behind these ...

These assumptions, which can vary depending on the model, include normality, homogeneity of variance, independence, and linearity, among others. Violating these assumptions can lead to biased or ...

Levene's test of homogeneity is particularly appropriate for short run applications because it is robust to departures from normality; refer to Snedecor and Cochran (1980). You can implement Levene's ...

Besides normality, these traditional regression models assumed linearity, independence and homogeneity of variance of the ... they violated several of their assumptions, and their use led to ...