liver {nparcomp} | R Documentation |
Data from a toxicity trial with male Wistar rats: Relative liver weight in a negative control group and in 4 dose groups with an increasing dose of an active treatment. After treatment the relative liver weight of the rats was computed.
data(liver)
A data frame with 38 observations on the following 2 variables.
dosage
weight
The objective is to test if the active treatment influence the liver weight of the rats.
Brunner, E., Munzel, U. (2002): Nichtparametrische Datenanalyse - Unverbundene Stichproben. Statistik und ihre Anwendungen, Springer, Berlin Heidelberg New York
data(liver) boxplot(weight~dosage,data=liver)