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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
nonsnorer
ocassional snorer
nearly every night
snores every night
factor indicating whether the indiviudal has heart disease (no or yes)
no
yes
Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.
# NOT RUN { T1 <- xtabs(~ heartdisease + snore, data = Snore) T1 chisq.test(T1) rm(T1) # }
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