tennis dataset

1.1

data

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)