sleep {datasets} | R Documentation |
Data which show the effect of two soporific drugs (increase in hours of sleep) on groups consisting of 10 patients each.
sleep
A data frame with 20 observations on 2 variables.
[, 1] | extra | numeric | increase in hours of sleep |
[, 2] | group | factor | patient group |
Student (1908) The probable error of the mean. Biometrika, 6, 20.
Scheffé, Henry (1959) The Analysis of Variance. New York, NY: Wiley.
require(stats) ## ANOVA anova(lm(extra ~ group, data = sleep))