The pig weight data set has 9 repeated weight measures on 48 pigs.
An object of class
Pigweight$x: Number of weeks since measurements commenced.
Pigweight$y: Bodyweight(kg) of pig after weeks.
We thank Professor Matt Wand for the permission to re-distribute this data set.
P. J. Diggle and P. Heagerty and K. Liang and S. Zeger (2002) Analysis of Longitudinal Data, 2nd edn, Oxford: Oxford University Press.
D. Ruppert and M. Wand and R. Carroll. (2003) Semiparametric Regression, New York: Cambridge University Press.