Description

Comparison of instruments to measure pH

Format

A data frame with 11 observations on the following 2 variables.

phold

a numeric vector

phnew

a numeric vector

Details

These data were collected to compare an old instrument to a new instrument. Eleven samples were tested with both instruments.

References

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

Examples