cabbages {MASS}  R Documentation 
Data from a cabbage field trial
Description
The cabbages
data set has 60 observations and 4 variables
Usage
cabbages
Format
This data frame contains the following columns:
Cult

Factor giving the cultivar of the cabbage, two levels:
c39
andc52
. Date

Factor specifying one of three planting dates:
d16
,d20
ord21
. 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. (2002) Modern Applied Statistics with SPLUS. Fourth Edition. Springer.
[Package MASS version 7.360.2 Index]