Fluoride levels from water sources

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Description

Fluoride levels from water sources

Format

A data frame with 58 observations on the following 2 variables.

source

a factor with levels A B C

fluoride

a numeric vector

References

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

Examples

1

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