CuZnAlt {NADA}

Zinc concentrations of the CuZn data set

Description

Zinc concentrations of the CuZn data set; concentrations in the Alluvial Fan zone have been altered so that there are more nondetects. This produces a greater signal, even with more nondetects.

Objective is to determine if zinc concentrations differ between the two zones. Zinc has two detection limits, at 3 and 10 ug/L. Used in Chapter 9 of the NADA book.

Usage

data(CuZnAlt)

Source

Altered from the data of Millard and Deverel, 1988, Water Resources Research 24, pp. 2087-2098.

References

Helsel, Dennis R. (2005). Nondectects and Data Analysis; Statistics for censored environmental data. John Wiley and Sons, USA, NJ.