| phmeas {EngrExpt} | R Documentation |
Comparison of instruments to measure pH
A data frame with 11 observations on the following 2 variables.
pholdphnewThese data were collected to compare an old instrument to a new instrument. Eleven samples were tested with both instruments.
Peter R. Nelson, Marie Coffin and Karen A. F. Copeland (2003), Introductory Statistics for Engineering Experimentation, Elsevier. (Appendix A)
str(phmeas)