Speed {BSDA} | R Documentation |
Data for Exercise 7.58
Speed
A data frame with 15 observations on the following 4 variables.
Before
After
differ
signrnks
Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Duxbury
str(Speed) attach(Speed) qqnorm(differ) qqline(differ) shapiro.test(differ) t.test(After,Before,paired=TRUE,alternative="greater") wilcox.test(After,Before,paired=TRUE,alternative="greater") detach(Speed)