rat.weight {mratios} | R Documentation |
Body weights of male rats were compared between a control group and a group which had received a high dose of a chemical in a toxicity study after a period of recovery
data(rat.weight)
A data frame with 20 observations on the following 2 variables.
group
Dosis
Kon
, where Dosis is the high dose group, consisiting of ten individulas and Kon is the control group, consisting of ten individualsweight
Aim was to test that application of the chemical does not lead to a relevantly lowered or heightened body weight after a time of recovery. 0.8 and 1.25 were defined as relevance boundaries compared to the mean of control group
Hauschke, D. (1999): Biometrische Methoden zur Auswertung und Planung von Sicherheitsstudien. Habilitationsschrift, Fachbereich Statistik, Universtaet Dortmund.
library(mratios) data(rat.weight) boxplot(weight~group, data=rat.weight) boxplot(weight~group, data=rat.weight)