sleep {psy}R Documentation

Ecological and Constitutional Data in Mammals

Description

Data from which conclusions were drawn in the article Mammals: Ecological and Constitutional Correlates, by Allison, T. and Cicchetti, D. (1976) Science, November 12, vol. 194, pp.732-734

Usage

data(sleep)

Format

This data frame contains the following columns:

Species
a factor with levels
Body.weight
a numeric vector, body weight in kg
Brain.weight
a numeric vector, Brain weight in g
Slow.wave.sleep
a numeric vector, nondreaming sleep (hrs/day)
Paradoxical.sleep
a numeric vector, dreaming sleep (hrs/day)
Total.sleep
a numeric vector, nondreaming + "dreaming" (hrs/day)
Maximum.life.span
a numeric vector (in years)
Gestation.time
a numeric vector (in days)
Predation
a numeric vector, Predation index (1 min - 5 max)
Sleep.exposure
a numeric vector, Sleep exposure index (1 min - 5 max)
Danger
a numeric vector, Overall danger index (1 min - 5 max)

Source

http://lib.stat.cmu.edu/datasets/sleep

References

Mammals: Ecological and Constitutional Correlates, by Allison, T. and Cicchetti, D. (1976) Science, November 12, vol. 194, pp.732-734

Examples

data(sleep)
str(sleep)

[Package psy version 0.7 Index]