sleep1 {alr3} | R Documentation |
Includes species averages for 62 mammals.
This data frame uses spcies as row lable and contains the following columns:
Slow wave nondreaming sleep, hrs/day
Paradoxical dreaming sleep, hrs/day
Total sleep, hrs/day
Body weight in kg
Brain weight in g
Maximum life span, years
Gestation time, days
Predation index, 1=low,5=hi
Sleep exposure index 1=exposed, 5=protected
Danger index, 1=least, 5=most
Allison, T. and Cicchetti, D. (1976). Sleep in Mammals: Ecological and Constitutional Correlates Science, vol. 194, pp. 732-734.
Weisberg, S. (2005). Applied Linear Regression, 3rd edition. New York: Wiley, Section 6.2.
head(sleep1)