Shapiro-Wilk test on each variable

For a data.frame, run Shapiro-Wilk test on each column, if a "by" is specified, it will run a stratified Shapiro-wilk test by this column

Usage

normality_table(data, by = NULL)

Arguments

data,

data.frame, the data table to be tested

by,

optional str, the column by which data will be stratified

Value

data.frame, a data frame including all the results