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safety

Safety violations over time

Description

Safety violations over time

Format

A data frame with 30 observations on the following 4 variables.

year

a numeric vector

place

a factor with levels CA, KY, MI, NY, TN and TX

employees

a numeric vector

cases

a numeric vector

References

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

Examples

str(safety)
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

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