yield dataset

1.1

data

Yield of a chemical process

Format

A data frame with 20 observations on the following 3 variables.

• temp: temperature of the slurry(degrees C)
• pH: pH of the slurry
• yield: yield of the process (tons)

References

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

Examples

str(yield)
xyplot(yield ~ temp|cut(pH, seq(6.25,6.85,len = 4), ordered = TRUE),
       yield, type = c("g","p","r"),
       xlab = "Temperature of the slurry (degrees C)",
       ylab = "Yield (tons)")