abrasion {faraway}

Wear on materials according to type, run and position

Description

The abrasion data frame has 16 rows and 4 columns. Four materials were fed into a wear testing machine and the amount of wear recorded. Four samples could be processed at the same time and the position of these samples may be important. A Latin square design was used.

Format

This data frame contains the following columns:

run

The run number 1-4

position

The position number 1-4

material

The material A-D

wear

The wear measured loss of weight in 0.1mm over testing period

Source

The Design and Analysis of Industrial Experiments by O. Davies, 1954, published by Wiley