purity: Purity of product from a filtration process

Description Format Details References Examples

Description

Purity of product from a filtration process

Format

A data frame with 12 observations on the following 4 variables.

tech

indicator factor for technician

fac1

a factor with 3 levels

fac2

a factor with 2 levels

purity

a response factor

Details

This experiment was run by two technicians to study the impact of two process factors on the purity of the product after filtration.

References

Peter R. Nelson, Marie Coffin and Karen A. F. Copeland (2003), Introductory Statistics for Engineering Experimentation, Elsevier. (Appendix A)

Examples

1


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