pigs {SMPracticals}

Pig Diet Data

Description

Data on weight gains in 32 pigs, divided into eight groups of four, and with 4 different diets allocated to the group members.

Usage

data(pigs)

Format

A data frame with 32 observations on the following 3 variables.

group

a factor with 8 levels

diet

a factor with levels I–IV

gain

weight gain (units unknown)

Source

Unpublished lecture notes, Imperial College, London

References

Davison, A. C. (2003) Statistical Models. Cambridge University Press. Page 431.

Examples

data(pigs)
anova(lm(gain~group+diet,data=pigs))