The body weights of the chicks were measured at birth and every second day
thereafter until day 20. They were
also measured on day 21. There were four groups on chicks on different
protein diets.
Usage
data(chicksw)
Arguments
Format
Contains four variables, as follows:
chick
An ordered factor with levels different giving a unique
identifier for the chick. The ordering of the
levels groups chicks on the same diet together and orders
them according to their final weight
(lightest to heaviest) within diet.
diet
A factor with levels 1,2,3 and 4 indicating which experimental
diet the chick received.
time
A numeric vector giving the number of days since birth when
the measurement was made.
weight
A numeric vector giving the body weight of the chick (gm).
References
Crowder M, Hand D. 1990. Analysis of Repeated Measures. Chapman and Hall