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tennis

Durability of tennis ball covers

Description

Durability of tennis ball covers

Format

A data frame with 20 observations on the following 2 variables.

type

a factor with levels A, B, C and D

wear

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(tennis)
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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