Check model for homogeneity of variances
Check model for homogeneity of variances between groups described by independent variables in a model.
check_homogeneity(x, method = c("bartlett", "fligner", "levene", "auto"), ...)x |
A linear model or an ANOVA object. |
method |
Name of the method (underlying test) that should be performed
to check the homogeneity of variances. May either be |
... |
Arguments passed down to |
Invisibly returns the p-value of the test statistics. A p-value < 0.05 indicates a significant difference in the variance between the groups.
There is also a plot()-method implemented in the see-package.
model <- lm(len ~ supp + dose, data = ToothGrowth)
check_homogeneity(model)
# plot results
if (require("see")) {
result <- check_homogeneity(model)
plot(result)
}Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.