R: machine operators

machineOperators {robCompositions} | R Documentation

## 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.

### 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.

### Author(s)

Matthias Templ matthias.templ@tuwien.ac.at

### References

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

### Examples

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

[Package robCompositions version 2.3.1 Index]