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

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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

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