Codebook:
- animal = animal name
- body = body weight in kg
- brain = brain weight in g
Source: MASS R package
References:
- Weisberg, S. (1985) Applied Linear Regression. 2nd edition. Wiley, pp. 144–5.
- Selected from: Allison, T. and Cicchetti, D. V. (1976) Sleep in mammals: ecological and constitutional correlates. Science 194, 732–734.