Measures of softness of ten different clothing garments washed with and without a softener
Data for Example 7.21
Fabric
A data frame/tibble with 20 observations on three variables
a numeric vector
a character variable with values with and without
a numeric vector
Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.
wilcox.test(softness ~ softner, data = Fabric,
paired = TRUE, alternative = "greater")
## Not run:
library(tidyr)
T7 <- tidyr::spread(Fabric, softner, softness) %>%
mutate(di = with - without, adi = abs(di), rk = rank(adi),
srk = sign(di)*rk)
T7
t.test(T7$srk, alternative = "greater")
## End(Not run)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.