Snoring versus heart disease
Data for Exercise 8.21
Snore
A data frame/tibble with 2,484 observations on two variables
factor with levels nonsnorer, ocassional snorer,
nearly every night, and snores every night
factor indicating whether the indiviudal has heart disease
(no or yes)
Norton, P. and Dunn, E. (1985), Snoring as a Risk Factor for Disease, British Medical Journal, 291, 630-632.
Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.
T1 <- xtabs(~ heartdisease + snore, data = Snore) T1 chisq.test(T1) rm(T1)
Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.