Bacteria concentrations in water samples
Bacteria concentrations in water samples
A data frame with 50 observations on the following variable.
bacteriabacteria concentration (ppm)
Peter R. Nelson, Marie Coffin and Karen A. F. Copeland (2003), Introductory Statistics for Engineering Experimentation, Elsevier. (Appendix A)
str(water)
qqmath(~ bacteria, water, aspect = 1,
xlab = "Standard normal quantiles",
ylab = "Bacteria concentration (ppm)")
histogram(~ bacteria, water, breaks = 0:14 - 0.5,
xlab = "Bacteria concentration (ppm)")
xtabs(~ bacteria, water)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.