ccthickn: Clear coat thickness

In EngrExpt: Data sets from "Introductory Statistics for Engineering Experimentation"

Description

Measurements of film build from 40 test panels sprayed in a pilot plant spray booth to study paint equipment set-up. Target film build was 65 microns.

Format

A data frame with 40 observations on the following variable.

thickness

clear coat thickness (microns)

Details

Cars are coated (i.e., painted) in layers. The “film build” (i.e. thickness) of each layer of the coating has an effect on the properties of the paint (performance and appearance) so it is important to maintain the correct film builds. The final layer of paint on a car is called the clear coat; the film build of this layer was to be 65 microns.

References

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

Examples

str(ccthickn)
densityplot(~ thickness, ccthickn, xlab = "Clear coat thickness (microns)")
qqmath(~ thickness, ccthickn, aspect = 1,
       ylab = "Clear coat thickness (microns)",
       xlab = "Standard normal quantiles",
       type = c("g","p"),
       panel=function(...)
   {
       panel.qqmathline(..., alpha = 0.5, lty = 2)
       panel.qqmath(...)
   })

EngrExpt documentation built on May 1, 2019, 9:15 p.m.