The
cabbages
data set has 60 observations and 4 variables
This data frame contains the following columns:
c39
and
c52
.
d16
,
d20
or
d21
.
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.)