VIM (version 4.3.0)

sleep: Mammal sleep data

Description

Sleep data with missing values.

source

Allison, T. and Chichetti, D. (1976) Sleep in mammals: ecological and constitutional correlates. Science 194 (4266), 732--734. The data set was imported from GGobi.

Examples

data(sleep, package = "VIM")
summary(sleep)
aggr(sleep)