yield: Yield of a chemical process

In EngrExpt: Data sets from "Introductory Statistics for Engineering Experimentation"

Description

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)")

Example output

Loading required package: lattice
'data.frame':	20 obs. of  3 variables:
 $ temp : num  20.9 21.2 20.8 20.1 20.3 22.7 20.4 22 20.5 21.5 ...
 $ pH   : num  6.8 6.3 6.8 6.4 6.3 6.6 6.4 6.7 6.8 6.5 ...
 $ yield: num  32.5 32.1 32.2 31.6 30.8 33 31.5 32.9 32.4 32.5 ...

EngrExpt documentation built on May 1, 2019, 9:15 p.m.