Helsel.Cohn.88.silver.df

Silver concentrations (mg/L) from an interlab comparison. There are 34 observations 
 out of a total of 56 that are reported as &lt;DL, where DL denotes a detection limit. There 
 are 12 distinct detection limits.

datasets

Graphical and statistical analyses of environmental data, with
focus on analyzing chemical concentrations and physical parameters, usually in
the context of mandated environmental monitoring. Major environmental
statistical methods found in the literature and regulatory guidance documents,
with extensive help that explains what these methods do, how to use them,
and where to find them in the literature. Numerous built-in data sets from
regulatory guidance documents and environmental statistics literature. Includes
scripts reproducing analyses presented in the book "EnvStats: An R Package for
Environmental Statistics" (Millard, 2013, Springer, ISBN 978-1-4614-8455-4,
<doi:10.1007/978-1-4614-8456-1>).

Alexander Kowarik

EnvStats

Package for Environmental Statistics, Including US EPA Guidance

Steven P. Millard

Helsel.Cohn.88.silver.df function

A data frame with 56 observations on the following 4 variables.<dl>
 <dt><code>Ag.orig</code></dt>
<dd>a character vector of original silver concentrations (mg/L)</dd> <dt><code>Ag</code></dt>
<dd>a numeric vector with nondetects coded to the detection limit</dd> <dt><code>Censored</code></dt>
<dd>a logical vector indicating which observations are censored</dd> <dt><code>log.Ag</code></dt>
<dd>the natural logarithm of <code>Ag</code></dd> 
</dl>

Format

Silver Concentrations From An Interlab Comparison — Helsel.Cohn.88.silver.df

A data frame with 56 observations on the following 4 variables.<dl>
 <dt><code>Ag.orig</code></dt>
<dd>a character vector of original silver concentrations (mg/L)</dd>

 <dt><code>Ag</code></dt>
<dd>a numeric vector with nondetects coded to the detection limit</dd>

 <dt><code>Censored</code></dt>
<dd>a logical vector indicating which observations are censored</dd>

 <dt><code>log.Ag</code></dt>
<dd>the natural logarithm of <code>Ag</code></dd>

 
</dl>

Helsel.Cohn.88.silver.df: Silver Concentrations From An Interlab Comparison

Description

Usage

Arguments

Format

References