Average butterfat content (percentages)
for random samples of 20 cows (10 two year olds and 10 mature (greater
than four years old)) from each of five breeds.
Usage
data(butterfat)
Arguments
Format
A data frame with 100 observations on the following 3 variables.
Butterfat
a numeric vector
Breed
a factor with levels AyrshireCanadianGuernseyHolstein-FresianJersey