@subsubheading Description

This data set provides measurements of the diameter, height and volume of
timber in 31 felled black cherry trees. Note that the diameter (in inches)
is erroneously labelled Girth in the data. It is measured at 4 ft 6 in
above the ground.

@subsubheading Format

@table @code
@item Girth
Tree diameter (rather than girth, actually) in inches.
@item Height
Height in ft.
@item Volume
Volume of timber in cubic feet.
@end table

@subsubheading Source

Ryan, T. A., Joiner, B. L. and Ryan, B. F. (1976). @cite{The Minitab
Student Handbook}. Duxbury Press.

@subsubheading References

Atkinson, A. C. (1985). @cite{Plots, Transformations and Regression}.
Oxford: Oxford University Press.

@subsubheading Examples

@example
@INCLUDE_DATASET_EXAMPLE_SCRIPT{trees_1.m}
@end example
