trees {SMIR}R Documentation

The Minitab cherry tree data

Description

The volume of usable wood 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.

Usage

data(trees)

Format

A data.frame of 31 obs. of 3 variables:
[,] d numeric, diameter in inches
[,] h integer, height in feet
[,] v numeric volume of usable wood,

Note

See pp.126 and 191 in SMIR

Source

Ryan, T. and Joiner, B. and Ryan, B., (1976). Minitab Students Handbook, Duxbury Press, North Scituate, Mass


[Package SMIR version 0.02 Index]