Envstats An R Package For Environmental Statistics

This book describes EnvStats, a new comprehensive R package for environmental statistics. EnvStats and R provide an open-source set of powerful functions for performing graphical and statistical analyses of environmental data, along with an extensive hypertext help system that explains what these methods do, how to use them, and where to find them in the environmental statistics literature. EnvStats also includes numerous built-in data sets from regulatory guidance documents, state and federal databases, and the literature. This book shows how to use EnvStats and R to easily: * Graphically display environmental data and probability distributions * Deal with non-detect (censored) data * Perform and plot results of goodness-of-fit tests * Compare chemical concentrations to a protection standard using confidence intervals for percentiles or parameters * Assess compliance at multiple sites for multiple constituents using simultaneous prediction limits * Test for trend accounting for seasons and serial correlation * Perform power and sample size computations with companion plots for sampling designs based on hypothesis tests, confidence intervals, prediction intervals, or tolerance inte