colu {nparcomp} | R Documentation |
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
data(colu)
A data frame with 92 observations on the following 2 variables.
dose
dose1
dose2
dose3
dose4
Placebo
, where Placebo is the placebo
group and dose1-dose4
are the 4 dose groups with an increasing dosecorpora
The objective is to test if the active treatment influence the fertiliy of the rats
Brunner, E., Munzel, U. (2002): Nichtparametrische Datenanalyse - Unverbundene Stichproben. Statistik und ihre Anwendungen, Springer, Berlin Heidelberg New York
library(nparcomp) data(colu) boxplot(corpora~dose,data=colu)