Reaction effects of 4 drugs on 25 subjects with a nervous disorder
Data for Example 10.3
Nervous
A data frame/tibble with 25 observations on two variables
a numeric vector representing reaction time
a numeric vector indicating each of the 4 drugs
Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.
boxplot(react ~ drug, data = Nervous, col = rainbow(4)) model <- aov(react ~ factor(drug), data = Nervous) summary(model) TukeyHSD(model) plot(TukeyHSD(model), las = 1)
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