water: Bacteria concentrations in water samples

Description Format References Examples

Description

Bacteria concentrations in water samples

Format

A data frame with 50 observations on the following variable.

bacteria

bacteria concentration (ppm)

References

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

Examples

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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)

EngrExpt documentation built on May 29, 2017, 12:01 p.m.

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