nparcomp (version 3.0)

colu: Numbers of corpora lutea

Description

Data from a fertility trial with 92 female Wistar rats: numbers of the corpora lutea in a placebo group and in 4 dose groups with an increasing dose of an active treatment.

Usage

data(colu)

Format

A data frame with 92 observations on the following 2 variables.

dose

A factor with levels dose1, dose2, dose3, dose4, Placebo, where Placebo is the placebo group and dose1-dose4 are the 4 dose groups with an increasing dose.

corpora

A numeric vector containing the numbers of the corpora lutea.

Details

The objective is to test if the active treatment influences the fertiliy of the rats.

Examples

# NOT RUN {
library(nparcomp)
data(colu)
boxplot(corpora~dose,data=colu)
# }