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NADA for R: Nondetects and Data Analysis for the R statistical computing environment
VIEW LINK: http://water.usgs.gov/software/NADA_for_R/
Developed by the U.S. Geological Survey, NADA for R is a library package for the R environment for graphics and statistics. All functions are presented within in a consistent, user-friendly framework and can be used to:
- plot data,
- generate summary statistics,
- compute exceedance probabilities, and
- perform hypothesis tests on data containing multiple censoring thresholds (a.k.a nondetects, or less-thans).
The package contains data and analysis methods described in the book: Nondetects and Data Analysis: Statistics for Censored Environmental Data, Helsel (2005).
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