v
in cubic feet (1 foot \ = 30.48 cm) is given for each of
a sample of 31 black cherry trees, and the height h
in feet and
the diameter d
in inches (1 inch = 2.54 cm) at a height 4.5 feet
above the ground.
data(trees)
[,] | d |
numeric, diameter in inches | [,] |
h | integer, height in feet |