byf.shapiro

a formula of the form <code>a ~ b</code> where <code>a</code> gives the data values and <code>b</code> a factor giving the corresponding groups.

formula

an optional data frame containing the variables in the formula <code>formula</code>. By default the variables are taken from <code>environment(formula)</code>.

data

Perform a Shapiro-Wilk's test on a numeric variable per level of a factor.

This package contains diverse more or less complicated
        functions, written to simplify beginners' (but not only) life:
        simplifications of existing functions, basic but not
        implemented tests, easy-to-use tools, bridges between functions
        of different packages... All functions are presented in the
        French book 'Aide-memoire de statistique appliquee a la
        biologie', written by the same author and available on CRAN.

byf.shapiro: Shapiro-Wilk's test for factor levels

Description

Usage

Arguments

Examples