levene.test {s20x}R Documentation

Levene test for the ANOVA Assumption

Description

Perform a Levene test for equal group variances in both one-way and two-way ANOVA. A table with the results is displayed.

Usage

levene.test(formula, data, digit = 5)

Arguments

formula a symbolic description of the model to be fit: response ~ fac1 + fac2.
data an optional data frame containing the variables in the model.
digit the number of decimal places to display.

Value

Df degrees of freedom.
Sum of Sq sum squares.
Mean Sq mean squares.
F value F-statistic value.
Pr(F) P-value.

See Also

"interaction.20x", "anova".

Examples

## 
data(computer)
levene.test(score ~ factor(selfassess), computer)

[Package s20x version 2.6.1.000 Index]