robCompositions (version 2.4.1)

machineOperators: machine operators

Description

Compositions of eight-hour shifts of 27 machine operators

Usage

data(machineOperators)

Format

A data frame with 27 observations on the following 4 variables.

Author

Matthias Templ

Details

• hqproduction high-quality production

• lqproduction low-quality production

• setting machine settings

• repair machine repair

The data set from Aitchison (1986), p. 382, contains compositions of eight-hour shifts of 27 machine operators. The parts represent proportions of shifts in each activity: high-quality production, low-quality production, machine setting and machine repair.

References

Aitchison, J. (1986) The Statistical Analysis of Compositional Data Monographs on Statistics and Applied Probability. Chapman and Hall Ltd., London (UK). 416p.

Examples

data(machineOperators)
str(machineOperators)
summary(machineOperators)
rowSums(machineOperators)