Bland's Apple Shoot data. allshoots includes all the data, shortshoots just the short shoot data, and longshoots includes long shoots only.
This data frame contains the following columns:
days from dormancy
number of shoots sampled
average number of stem units
within-day standard deviation
1 if long shoots, 0 if shortshoots.
Bland, J. (1978). A comparisonof certain aspects of ontogeny in the long and short shoots of McIntosh apple during one annual growth cycle. Unpublished Ph. D. dissertation, University of Minnesota, St. Paul, Minnesota.
Weisberg, S. (2005). Applied Linear Regression, 3rd edition. New York: Wiley, Section 5.3.