Coffee {BSDA} | R Documentation |
Data for Exercise 7.55
Coffee
A data frame with 9 observations on the following 4 variables.
Without
With
differ
sgnrnks
Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Duxbury
str(Coffee) attach(Coffee) qqnorm(differ) qqline(differ) shapiro.test(differ) t.test(With,Without,paired=TRUE,alternative="greater") wilcox.test(With,Without,paired=TRUE,alternative="greater") detach(Coffee)