check_symmetry {performance}

Check distribution symmetry

Description

Uses Hotelling and Solomons test of symmetry by testing if the standardized nonparametric skew (\frac{(Mean - Median)}{SD}) is different than 0.

This is an underlying assumption of Wilcoxon signed-rank test.

Usage

check_symmetry(x, ...)

Arguments

x

Model or numeric vector

...

Not used.

Examples

V <- suppressWarnings(wilcox.test(mtcars$mpg))
check_symmetry(V)