Diameters of 14 metal rods measured once each with each of two calipers.
A data frame with 14 observations on the following 3 variables.
indicator of which part is measured - a factor
measurement with caliper type A
measurement with caliper type B
This is an experiment to study the relationship between the measurements taken by the two calipers on various parts. The diameter of each part is not of interest.
Peter R. Nelson, Marie Coffin and Karen A. F. Copeland (2003), Introductory Statistics for Engineering Experimentation, Elsevier. (Appendix A)
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