This dataset comes from a pilot study to investigate the effects of marijuana. Nine male subjects received three treatments each (placebo, low dose and high dose) and the order of treatments was balanced in a replicated 3 x 3 Latin square. Under each treatment, the change in heart rate (beats per minute above baseline) was recorded 15 minutes after smoking and 90 minutes after smoking, producing six measures per subject, but five of the 54 data values are missing. These data were analyzed by Schafer (1997, Chap. 5).
data(marijuana)a data frame with 9 rows and 6 variables.
Schafer, J.L. (1997) Analysis of Incomplete Multivariate Data. London: Chapman & Hall/CRC Press.
For example analyses of this dataset using functions in
the norm2 package, see the manual NORM Package for R, Version 2
in the library subdirectory doc.