The data set yarnred is from a team project to investigate the effect
of count number and yarn type on the tensile strength of yarn. The Uster
Tensorapid 3, a standard machine for measuring tensile strength, was used
to take 10 measurements of strength from each of 6 yarn cones (one of each
type and count, 10 feet between measurements on each cone).
A data frame with 60 observations on the following 3 variables.
: thread count (24 or 36)
: yarn type (AirJet, OpenEnd or Ring)
: tensile strength