Graham.et.al.75.etu.df

These data are the results of an experiment in which different groups of rats were 
 exposed to different concentration levels of ethylene thiourea (ETU), which is a 
 decomposition product of a certain class of fungicides that can be found in treated 
 foods (Graham et al., 1975; Rodricks, 1992, p.133). In this experiment, the outcome of 
 concern was the number of rats that developed thyroid tumors.

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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
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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

Graham.et.al.75.etu.df function

A data frame with 6 observations on the following 4 variables.<dl>
 <dt><code>dose</code></dt>
<dd>a numeric vector of dose (ppm/day) of ETU.</dd> <dt><code>tumors</code></dt>
<dd>a numeric vector indicating number of rats that developed thyroid tumors.</dd> <dt><code>n</code></dt>
<dd>a numeric vector indicating the number of rats in the dose group.</dd> <dt><code>proportion</code></dt>
<dd>a numeric vector indicating proportion of rats that developed thyroid tumors.</dd> 
</dl>

Format

Ethylene Thiourea Dose-Response Data — Graham.et.al.75.etu.df

A data frame with 6 observations on the following 4 variables.<dl>
 <dt><code>dose</code></dt>
<dd>a numeric vector of dose (ppm/day) of ETU.</dd>

 <dt><code>tumors</code></dt>
<dd>a numeric vector indicating number of rats that developed thyroid tumors.</dd>

 <dt><code>n</code></dt>
<dd>a numeric vector indicating the number of rats in the dose group.</dd>

 <dt><code>proportion</code></dt>
<dd>a numeric vector indicating proportion of rats that developed thyroid tumors.</dd>

 
</dl>

Graham.et.al.75.etu.df: Ethylene Thiourea Dose-Response Data

Description

Usage

Arguments

Format

References