Blood pressure of 15 adult males taken by machine and by an expert
Data for Exercise 7.84
Blood
A data frame/tibble with 15 observations on the following two variables
blood pressure recorded from an automated blood pressure machine
blood pressure recorded by an expert using an at-home device
Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.
DIFF <- Blood$machine - Blood$expert shapiro.test(DIFF) qqnorm(DIFF) qqline(DIFF) rm(DIFF) t.test(Blood$machine, Blood$expert, paired = TRUE)
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