codata

This is a replicated 3^2 experiment reported in Box, Hunter, and Hunter (2005), Table 10.17.

datasets

design

Provides functions to generate response-surface designs,
fit first- and second-order response-surface models,
make surface plots, obtain the path of steepest ascent,
and do canonical analysis. A good reference on these methods
is Chapter 10 of Wu, C-F J and Hamada, M (2009)
"Experiments: Planning, Analysis, and Parameter Design Optimization"
ISBN 978-0-471-69946-0. An early version of the package is
documented in Journal of Statistical Software <doi:10.18637/jss.v032.i07>.

Russell Lenth

Response-Surface Analysis

codata function

A data frame with 18 observations on the following 3 variables.<dl>
 <dt><code>x1</code></dt>
<dd>a numeric vector, coded design variable for ethanol concentration</dd> <dt><code>x2</code></dt>
<dd>a numeric vector, coded design variable for air-to-fuel ratio</dd> <dt><code>y</code></dt>
<dd>a numeric vector, the response (CO concentration, in micrograms per cubic meter)</dd> 
</dl>

Format

Automobile emissions data — codata

A data frame with 18 observations on the following 3 variables.<dl>
 <dt><code>x1</code></dt>
<dd>a numeric vector, coded design variable for ethanol concentration</dd>

 <dt><code>x2</code></dt>
<dd>a numeric vector, coded design variable for air-to-fuel ratio</dd>

 <dt><code>y</code></dt>
<dd>a numeric vector, the response (CO concentration, in micrograms per cubic meter)</dd>

 
</dl>

codata: Automobile emissions data

Description

Usage

Arguments

Format

Details

Examples