Description

The data are from a foster feeding experiment with rat mothers and litters of four different genotypes. The measurement is the litter weight after a trial feeding period.

Usage

Format

A data frame with 61 observations on the following 3 variables.

litgen

genotype of the litter, a factor with levels A, B, I, and J.

motgen

genotype of the mother, a factor with levels A, B, I, and J.

weight

the weight of the litter after a feeding period.

Details

Here the interest lies in uncovering the effect of genotype of mother and litter on litter weight.

Source

D. J. Hand, F. Daly, A. D. Lunn, K. J. McConway and E. Ostrowski (1994). A Handbook of Small Datasets, Chapman and Hall/CRC, London.

Examples