cabbages:
Data from a cabbage field trial
Description
The cabbages
data set has 60 observations and 4 variables
Format
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.
Source
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.)References
Venables, W. N. and Ripley, B. D. (1999)
Modern Applied Statistics with S-PLUS. Third
Edition. Springer.