Machine heads data

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Description

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

Usage

1

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

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