This dataset presents paired data corresponding to the sleep hours gained by 10 patients (these are differences indeed) using two isomers (Dextro- and Laevo-). These data from Student were studied by Fischer (1925). Read the paper of Preece (1982, section 9) for a complete understanding of this quite complex situation.
data(Sleep)
A dataframe with 10 rows and 2 columns:
[,1] | Dextro | numeric | sleep hour gain |
[,2] | Laevo | numeric | sleep hour gain |
Preece, D.A. (1982) t is for trouble (and textbooks): a critique of some examples of the paired-samples t-test. The Statistician, 31 (2), 169-195.