The catsM data frame has 97 rows and 3 columns.
144 adult (over 2kg in weight) cats used for experiments with the drug
digitalis had their heart and body weight recorded. 47 of the cats were
female and 97 were male. The catsM data frame consists of the data for
the male cats. The full data are in dataset cats
in package MASS.
catsMThis data frame contains the following columns:
SexA factor for the sex of the cat (levels are F and M: all
cases are M in this subset).
BwtBody weight in kg.
HwtHeart weight in g.
Davison, A.C. and Hinkley, D.V. (1997) Bootstrap Methods and Their Application. Cambridge University Press.
Venables, W.N. and Ripley, B.D. (1994) Modern Applied Statistics with S-Plus. Springer-Verlag.