Tearing factor for paper

Data from an experiment in which five different pressures were applied during the sheet-pressing phase in the manufacture of paper.

Usage

tearing

Format

A data frame with 20 rows and 2 columns:

pressure

Pressure applied during pressing

tear_factor

Tear factor

Source

Williams, E.J. (1959) Regression Analysis, New York: John Wiley & Sons, 17.

Details

The aim was to investigate the effect of pressure on the tear factor of the paper, which is the percentage of a standard force which is necessary to tear the paper. Four sheets of paper were selected and tested from each of five batches made at different pressures. The pressures are equally spaced on a log scale, suggesting that the investigator expected equal changes in the ratio of pressures to produce equal changes in tearing factor. A log transformation of pressure may thus be appropriate.