ex1420

These data are the weight losses of subjects randomly assigned to one of three 
 diets, and these additional covariates sex, initial age, and body mass index. 
 Is there any evidence from these data that the mean weight loss differs for
 the different diets, after accounting for the effect of the covariates? How big
 are the difference?

datasets

Data sets from Ramsey, F.L. and Schafer, D.W. (2013), "The
Statistical Sleuth: A Course in Methods of Data Analysis (3rd
ed)", Cengage Learning.

Berwin Turlach

Sleuth3

Data Sets from Ramsey and Schafer's "Statistical Sleuth (3rd
Ed)"

ex1420 function

A data frame with 272 observations on the following 6 variables.<dl class="dl-horizontal">
 <dt>Subject</dt><dd>a subject identification number</dd>
 <dt>Diet</dt><dd>a factor with levels <code>"Low-Carbohydrate"</code>, 
 <code>"Low-Fat"</code>and <code>"Mediterranean"</code></dd>
 <dt>Sex</dt><dd>a factor with levels <code>"F"</code> and <code>"M"</code></dd>
 <dt>Age</dt><dd>subject's age in years</dd>
 <dt>BMI</dt><dd>body mass index in kg/squared meter</dd>
 <dt>WtLoss24</dt><dd>weight at the end of the 24 month study minus 
 initial weight, in kg</dd> 
 </dl>

Format

Diet Wars — ex1420

A data frame with 272 observations on the following 6 variables.<dl class='dl-horizontal'>
 <dt>Subject</dt><dd>a subject identification number</dd>
 <dt>Diet</dt><dd>a factor with levels <code>"Low-Carbohydrate"</code>, 
 <code>"Low-Fat"</code>and <code>"Mediterranean"</code></dd>
 <dt>Sex</dt><dd>a factor with levels <code>"F"</code> and <code>"M"</code></dd>
 <dt>Age</dt><dd>subject's age in years</dd>
 <dt>BMI</dt><dd>body mass index in kg/squared meter</dd>
 <dt>WtLoss24</dt><dd>weight at the end of the 24 month study minus 
 initial weight, in kg</dd> 
 </dl>

ex1420: Diet Wars

Description

Usage

Arguments

Format

See Also

Examples