sleep1: Sleep in mammals

In alr4: Data to Accompany Applied Linear Regression 4th Edition

Description

Includes species averages for 62 mammals.

Format

This data frame uses spcies as row lable and contains the following columns:

SWS

Slow wave nondreaming sleep, hrs/day

PS

Paradoxical dreaming sleep, hrs/day

TS

Total sleep, hrs/day

BodyWt

Body weight in kg

BrainWt

Brain weight in g

Life

Maximum life span, years

GP

Gestation time, days

P

Predation index, 1=low,5=hi

SE

Sleep exposure index 1=exposed, 5=protected

D

Danger index, 1=least, 5=most

Source

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

References

Weisberg, S. (2014). Applied Linear Regression, 4th edition. Hoboken NJ: Wiley.

Examples

head(sleep1)

Example output

Loading required package: car
Loading required package: effects
Loading required package: carData

Attaching package: 'carData'

The following objects are masked from 'package:car':

    Guyer, UN, Vocab

lattice theme set by effectsTheme()
See ?effectsTheme for details.
                          SWS  PS   TS   BodyWt BrainWt Life  GP P SE D
African_elephant           NA  NA  3.3 6654.000  5712.0 38.6 645 3  5 3
African_giant_pouched_rat 6.3 2.0  8.3    1.000     6.6  4.5  42 3  1 3
Arctic_Fox                 NA  NA 12.5    3.385    44.5 14.0  60 1  1 1
Arctic_ground_squirrel     NA  NA 16.5    0.920     5.7   NA  25 5  2 3
Asian_elephant            2.1 1.8  3.9 2547.000  4603.0 69.0 624 3  5 4
Baboon                    9.1 0.7  9.8   10.550   179.5 27.0 180 4  4 4

alr4 documentation built on May 2, 2019, 6:40 p.m.