polymer {daewr}

polymerization strength variability study

Description

Data from the polymerization strength variability study in chapter 5 of Design and Analysis of Experiments with R

Usage

data(polymer)

Format

A data frame with 120 observations on the following 5 variables.

lot

a factor with levels 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

box

a factor with levels 1 2

prep

a factor with levels 1 2

test

a factor with levels 1 2

strength

a numeric vector

Source

Design and Analysis of Experiments with R, by John Lawson, CRC/Chapman Hall

Examples

data(polymer)