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 (normally) displayed.

Usage

levene.test(formula, data, digit = 5, show.table = TRUE)

Arguments

formula a symbolic description of the model to be fitted: response ~ fac1 + fac2.
data an optional data frame containing the variables in the model.
digit the number of decimal places to display.
show.table If this argument is FALSE then the output will be suppressed

Value

df degrees of freedom.
ss sum squares.
ms mean squares.
f.value F-statistic value.
p.value P-value.

See Also

"crossFactors", "anova".

Examples

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

[Package s20x version 3.1-5 Index]