colu: Numbers of corpora lutea

Description Usage Format Details Source Examples

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

1

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.

Source

Brunner, E., Munzel, U. (2002): Nichtparametrische Datenanalyse - Unverbundene Stichproben. Statistik und ihre Anwendungen, Springer-Verlag.

Examples

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