heads.data {BHH2}R Documentation

Machine heads data

Description

Data set of the variability of machine heads in a quality improvement experiment.

Usage

data(heads.data)

Format

A data frame with 30 observations on the following 6 variables.

obs
numeric. Observation number.
periods
factor. Periods factor (P1, ..., P6).
heads
factor. Type of head factor (H1, ..., H5).
days
factor. Day factor (D1 and D2).
shifts
factor. Shift factor (S1, S2, and S3).
resp
numeric. Response.

Source

Box, G. E. P. (1993). "How to Get Lucky". Quality Engineering, Vol. 5, No. 3, pp 517-524.

References

Box G. E. P, Hunter, J. S. and Hunter, W. C. (2005). Statistics for Experimenters II. New York: Wiley.

Examples

data(heads.data)
str(heads.data)
plot(heads.data)

[Package BHH2 version 1.0.2 Index]