Wool {MLGdata}

Wool data

Description

The data show the number of cycles to failure of samples of worsted yarn under cycles of repeated loading. There are three experimental conditions arranged in a 3 x 3 x 3 factorial design.

Usage

Wool

Format

Data frame with 27 observations on the following 4 variables

x1

length of test specimen (-1, 250 mm; 0, 300 mm; 1, 350 mm)

x2

amplitude of loading cycle (-1, 8 mm; 0, 9 mm; 1, 10 mm)

x3

load (-1, 40 g; 0, 45 g; 1, 50 g)

y

cycles to failure

Source

Hand, D.J., Daly, F., Lunn, A.D., McConway, K.J., Ostrowski, E. (1994). Small Data Sets. London Chapman and Hall/CRC.