codling1988

codling1989

Data are from trials that studied the mortality response of codling moth
 to fumigation with methyl bromide, for the year 1988 only

datasets

Functions are provided that implement the
use of the Fieller's formula methodology, for
calculating a confidence interval for a ratio of
(commonly, correlated) means. See Fieller (1954)
<doi:10.1111/j.2517-6161.1954.tb00159.x>. Here,
the application of primary interest is to studies
of<c2><a0>insect mortality response to<c2><a0>increasing doses
of a fumigant, or, e.g., to time in coolstorage.
The formula is used to calculate a confidence
interval for the dose or time required to achieve
a specified mortality proportion, commonly 0.5
or 0.99. Vignettes demonstrate link functions
that may be considered, checks on fitted models,
and alternative choices of error family. Note
in particular the betabinomial error family.
See also Maindonald, Waddell, and Petry (2001)
<doi:10.1016/S0925-5214(01)00082-5>.

John Maindonald

Quantal Response Analysis for Dose-Mortality Data

codling1988 function

A data frame with 77 observations (<code>codling1988</code>), and with 40
 observations (<code>codling1989</code>), on the following 8 variables.<dl class="dl-horizontal">
 <dt>dose</dt><dd>Injected dose of methyl bromide, in gm per cubic meter</dd>
 <dt>ct</dt><dd>Concentration-time sum</dd>
 <dt>total</dt><dd>Number of insects in chamber</dd>
 <dt>dead</dt><dd>Number of insects dying</dd>
 <dt>PropDead</dt><dd>Proportion dying</dd>
 <dt>Cultivar</dt><dd>a factor with 1988 levels <code>BRAEBURN</code>
 <code>FUJI</code> <code>GRANNY</code> <code>Red Delicious</code> and <code>ROYAL</code>;
 and with 1989 levels <code>Gala</code>, <code>Red Delicious</code>
 and <code>Splendour</code></dd>
 <dt>rep</dt><dd>replicate number, within <code>Cultivar</code></dd>
 <dt>cultRep</dt><dd>Cultivar/replicate combination</dd>
 </dl>

Format

Dose-mortality data, for fumigation of codling moth with methyl bromide — codling1988

A data frame with 77 observations (<code>codling1988</code>), and with 40
 observations (<code>codling1989</code>), on the following 8 variables.<dl class='dl-horizontal'>
 <dt>dose</dt><dd>Injected dose of methyl bromide, in gm per cubic meter</dd>
 <dt>ct</dt><dd>Concentration-time sum</dd>
 <dt>total</dt><dd>Number of insects in chamber</dd>
 <dt>dead</dt><dd>Number of insects dying</dd>
 <dt>PropDead</dt><dd>Proportion dying</dd>
 <dt>Cultivar</dt><dd>a factor with 1988 levels <code>BRAEBURN</code>
 <code>FUJI</code> <code>GRANNY</code> <code>Red Delicious</code> and <code>ROYAL</code>;
 and with 1989 levels <code>Gala</code>, <code>Red Delicious</code>
 and <code>Splendour</code></dd>
 <dt>rep</dt><dd>replicate number, within <code>Cultivar</code></dd>
 <dt>cultRep</dt><dd>Cultivar/replicate combination</dd>
 </dl>

codling1988: Dose-mortality data, for fumigation of codling moth with methyl bromide

Description

Usage

Arguments

Format

Details