Data from a cabbage field trial
cabbages data set has 60 observations and 4 variables
This data frame contains the following columns:
Factor giving the cultivar of the cabbage, two levels:
Factor specifying one of three planting dates:
Weight of the cabbage head, presumably in kg.
Ascorbic acid content, in undefined units.
Rawlings, J. O. (1988)
Applied Regression Analysis: A Research Tool.
Wadsworth and Brooks/Cole. Example 8.4, page 219.
(Rawlings cites the original source as the files of the late
Dr Gertrude M Cox.)
Venables, W. N. and Ripley, B. D. (1999)
Modern Applied Statistics with S-PLUS. Third
Dataset imported from https://www.r-project.org.