Spelling {BSDA} | R Documentation |
Data for Exercise 7.56
Spelling
A data frame with 9 observations on the following 3 variables.
Before
After
differ
Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Duxbury
str(Spelling) attach(Spelling) qqnorm(differ) qqline(differ) shapiro.test(differ) t.test(After,Before,paired=TRUE,alternative="greater") detach(Spelling)