Weightloss of rats
An artificial dataset. 24 rats (12 female, 12 male) have been randomized to use one of three drugs (products for loosing weight). The weightloss for each rat is noted after one and two weeks. data
A dataframe with 4 variables. Sex: "M" (male), "F" (female). Drug: "D1", "D2", "D3" (three types). W1 weightloss, week one. W2 weightloss, week 2.
data(rats)
Morrison, D.F. (1976). Multivariate Statistical Methods. McGraw-Hill, USA.
Edwards, D. (1995). Introduction to Graphical Modelling, Springer-Verlag. New York.