Allergy medicines by adverse events
Data used in Exercise 8.22
Allergy
A data frame/tibble with 406 observations on two variables
a factor with levels insomnia,
headache, and drowsiness
a factor with levels seldane-d,
pseudoephedrine, and placebo
Marion Merrel Dow, Inc. Kansas City, Mo. 64114.
Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.
T1 <- xtabs(~event + medication, data = Allergy) T1 chisq.test(T1)
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