R: The weight of rat pups

RatPupWeight {nlme} | R Documentation

## The weight of rat pups

### Description

The `RatPupWeight` data frame has 322 rows and 5 columns.

### Format

This data frame contains the following columns:

weight

  a numeric vector

sex

  a factor with levels `Male` `Female`

Litter

  an ordered factor with levels `9` < `8` < `7` < `4` < `2` < `10` < `1` < `3` < `5` < `6` < `21` < `22` < `24` < `27` < `26` < `25` < `23` < `17` < `11` < `14` < `13` < `15` < `16` < `20` < `19` < `18` < `12`

Lsize

  a numeric vector

Treatment

  an ordered factor with levels `Control` < `Low` < `High`

### Source

Pinheiro, J. C. and Bates, D. M. (2000), Mixed-Effects Models in S and S-PLUS, Springer, New York.

[Package nlme version 3.1-104 Index]