rat.weight

Body weights of male rats were compared between a control group and a group which had received a high dose of a chemical in a toxicity study after a period of recovery

datasets

Performs (simultaneous) inferences for ratios of linear combinations of coefficients in the general linear model, linear mixed model, and for quantiles in a one-way layout. Multiple comparisons and simultaneous confidence interval estimations can be performed for ratios of treatment means in the normal one-way layout with homogeneous and heterogeneous treatment variances, according to Dilba et al. (2007) <https://cran.r-project.org/doc/Rnews/Rnews_2007-1.pdf> and Hasler and Hothorn (2008) <doi:10.1002/bimj.200710466>. Confidence interval estimations for ratios of linear combinations of linear model parameters like in (multiple) slope ratio and parallel line assays can be carried out. Moreover, it is possible to calculate the sample sizes required in comparisons with a control based on relative margins. For the simple two-sample problem, functions for a t-test for ratio-formatted hypotheses and the corresponding confidence interval are provided assuming homogeneous or heterogeneous group variances.

Frank Schaarschmidt

mratios

Ratios of Coefficients in the General Linear Model

Gemechis Djira

Mario Hasler

Daniel Gerhard

Lawrence Segbehoe

rat.weight function

A data frame with 20 observations on the following 2 variables.<dl class="dl-horizontal">
 <dt>group</dt><dd>a factor with two levels, Dosis and Kon, where Dosis is the high dose group, consisiting of ten individulas and Kon is the control group, consisting of ten individuals</dd>
 <dt>weight</dt><dd>a numeric vector containing the values of response variable, final body weight in gramm</dd>
 </dl>

Format

Body weight of rats in a toxicity study — rat.weight

A data frame with 20 observations on the following 2 variables.<dl class='dl-horizontal'>
 <dt>group</dt><dd>a factor with two levels, Dosis and Kon, where Dosis is the high dose group, consisiting of ten individulas and Kon is the control group, consisting of ten individuals</dd>
 <dt>weight</dt><dd>a numeric vector containing the values of response variable, final body weight in gramm</dd>
 </dl>

rat.weight: Body weight of rats in a toxicity study

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