cabbages {MASS} | R Documentation |
The cabbages
data set has 60 observations and 4 variables
cabbages
This data frame contains the following columns:
Cult
Factor giving the cultivar of the cabbage, two levels: c39
and c52
.
Date
Factor specifying one of three planting dates: d16
,
d20
or d21
.
HeadWt
Weight of the cabbage head, presumably in kg.
VitC
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. (2002) Modern Applied Statistics with S-PLUS. Fourth Edition. Springer.