The data set metalcut is an attempt to determine which cutting
method (vertical or horizontal) yields the quickest and smoothest cuts
for three types of metal stock (angle, flat, round). Students from the
Biological Engineering Department measured cutting times and quality
for the six combinations of method and stock.
A data frame with 18 observations on the following 4 variables.
: cutting method (hcut for horizontal or vcut for vertical
: type of metal stock (angle, flat or round)
: cutting time (in seconds)
: smooth (0) or rough (1)