yarnred: Yarn tensile strength experiment - averaged measurements

In Rlab: Functions and Datasets Required for ST370 Class

Yarn tensile strength experiment - averaged measurements

Description

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). The 10

measurements for each cone are not true replications because the yarn cones

should be the experimental unit. Thus we have reduced the data by averaging

over the 10 measurements for each cone.

Format

A data frame with 6 observations on the following 4 variables.

count

: thread count (24 or 36)

type

: yarn type (AirJet, OpenEnd or Ring)

tensile

: tensile strength (average of 10 measurements)

std

: standard deviation amoung the 10 measurements

Rlab documentation built on May 5, 2022, 1:05 a.m.