Reading skills of 24 matched low ability students
Data for Example 7.18
Lowabil
A data frame/tibble with 12 observations on three variables
a numeric indicator of pair
score of the child with the experimental method
score of the child with the standard method
Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.
diff = Lowabil$experiment - Lowabil$control qqnorm(diff) qqline(diff) shapiro.test(diff) t.test(Lowabil$experiment, Lowabil$control, paired = TRUE) # OR t.test(diff) rm(diff)
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