Concrete {BSDA} | R Documentation |
Data for Exercise 7.17
Concrete
A data frame with 20 observations on the following 3 variables.
Strength
Method
Ranks
Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Duxbury
str(Concrete) attach(Concrete) wilcox.test(Strength~Method,alternative="greater") detach(Concrete)