performance (version 0.9.1)

check_sphericity: Check model for violation of sphericity

Description

Check model for violation of sphericity

Usage

check_sphericity(x, ...)

Value

Invisibly returns the p-values of the test statistics. A p-value < 0.05 indicates a violation of sphericity.

Arguments

x

A model object.

...

Arguments passed to car::Anova.

Examples

if (require("car")) {
  soils.mod <- lm(
    cbind(pH, N, Dens, P, Ca, Mg, K, Na, Conduc) ~ Block + Contour * Depth,
    data = Soils
  )

  check_sphericity(Manova(soils.mod))
}