EngrExpt: tensile – R documentation

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tensile

Tensile breaking strength of steel samples

Description

The breaking strength of samples of steel that were stress tested. This data set is called break in Nelson, Coffin and Copeland (2003). We changed the name because break is a reserved word in R.

Format

A data frame with 18 observations on the following variable.

bstrength: breaking strength (unknown units)

References

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

Examples

str(tensile)
qqmath(~ bstrength, tensile, aspect = 1,
       xlab = "Standard normal quantiles",
       ylab = "Breaking strength of steel samples (unknown units)")

EngrExpt

Data sets from "Introductory Statistics for Engineering Experimentation"

v0.1-8

GPL (>= 2)

Authors

R port by Douglas Bates <bates@stat.wisc.edu> and Karen A.F. Copeland <karen@boulderstats.com>

Initial release

2009-08-21