| xmp09.09 {Devore5} | R Documentation |
The xmp09.09 data frame has 16 rows and 4 columns.
This data frame contains the following columns:
Devore, J. L. (2000) Probability and Statistics for Engineering and the Sciences (5th ed), Duxbury
data(xmp09.09)
boxplot(xmp09.09[, c("Before", "After")],
main = "Data from Example 9.9")
attach(xmp09.09)
boxplot(Difference, main = "Differences in Example 9.9")
qqnorm(Difference,
main = "Normal probability plot (compare Figure 9.5, p. 377)")
t.test(Difference)
t.test(Before, After, paired = TRUE) # same test
detach()