byf.shapiro: Shapiro-Wilk test for factor levels

In RVAideMemoire: Testing and Plotting Procedures for Biostatistics

Shapiro-Wilk test for factor levels

Description

Performs a Shapiro-Wilk test on a numeric variable per level of a factor.

Usage

byf.shapiro(formula, data)

Arguments

formula	a formula of the form a ~ b where a gives the data values and b a factor giving the corresponding groups.
data	an optional data frame containing the variables in the formula formula. By default the variables are taken from environment(formula).

Value

method	name of the test.
data.name	a character string giving the names of the data.
tab	table of results.

Author(s)

Maxime HERVE <[e-mail]>

See Also

byf.qqnorm, shapiro.test

Examples

data(iris)
byf.shapiro(Sepal.Length~Species,data=iris)

RVAideMemoire documentation built on Nov. 6, 2023, 5:07 p.m.