homoVariance: homoVariance

In yogat3ch/HDA: Performs Routine Health Data Analytics Tasks

Description

Performs the three most common tests of homogeneity of variance. This test performs three of the most common homogeneity of variance tests:

• leveneTest

• bartlett.test

• fligner.test

Usage

homoVariance(form, dat)

Arguments

form	(formula) A formula in the form amenable to the lm function for which homogeneity of variance between predictors will be tested.
dat	(data.frame) The data in data.frame format

Value

A list with the output of each test

Levene

Levene's test for homogeneity of variance across groups, see leveneTest

Bartlett

Bartlett's test for homogeneity of variance, see bartlett.test

Fligner

Fligner-Killeen test for homogeneity of variance, see fligner.test

Examples

dat <- data.frame(y = rnorm(15,0,1),x = {rnorm(15,0,1) + rnorm(15,0,.02)})
homoVariance(y ~ x, dat)

yogat3ch/HDA documentation built on Sept. 13, 2019, 8:54 p.m.