Vietnam

A survey of student opinion on the Vietnam War was taken at the
University of North Carolina at Chapel Hill in May 1967 and published
in the student newspaper. Students were asked to fill in ballot
papers stating which policy out of A,B,C or D they supported.
Responses were cross-classified by gender/year.
The response categories were:<dl>
 <dt><code>A</code></dt>
<dd>Defeat North Vietnam by widespread bombing and land invasion</dd> <dt><code>B</code></dt>
<dd>Maintain the present policy</dd> <dt><code>C</code></dt>
<dd>De-escalate military activity, stop bombing and begin negotiations</dd> <dt><code>D</code></dt>
<dd>Withdraw military forces Immediately</dd>
</dl>

datasets

Provides additional data sets, methods and documentation to complement the 'vcd' package for Visualizing Categorical Data
and the 'gnm' package for Generalized Nonlinear Models.
In particular, 'vcdExtra' extends mosaic, assoc and sieve plots from 'vcd' to handle 'glm()' and 'gnm()' models and
adds a 3D version in 'mosaic3d'.  Additionally, methods are provided for comparing and visualizing lists of
'glm' and 'loglm' objects. This package is now a support package for the book, "Discrete Data Analysis with R" by
Michael Friendly and David Meyer.

Michael Friendly

vcdExtra

'vcd' Extensions and Additions

Heather Turner

David Meyer

Achim Zeileis

Duncan Murdoch

David Firth

Matt Kumar

Shuguang Sun

Vietnam function

A frequency data frame with 40 observations representing a 2 x 5 x 4 contingency table
 on the following 4 variables.<dl>
 <dt><code>sex</code></dt>
<dd>a factor with levels <code>Female</code> <code>Male</code></dd> <dt><code>year</code></dt>
<dd>year of study, an ordered factor with levels
 <code>Freshmen</code>, <code>Sophomore</code>, <code>Junior</code>, <code>Senior</code>, <code>Grad student</code></dd> <dt><code>response</code></dt>
<dd>a factor with levels <code>A</code> <code>B</code> <code>C</code> <code>D</code></dd> <dt><code>Freq</code></dt>
<dd>cell frequency, a numeric vector</dd> 
</dl>

Format

A survey of student opinion on the Vietnam War was taken at the
University of North Carolina at Chapel Hill in May 1967 and published
in the student newspaper. Students were asked to fill in ballot
papers stating which policy out of A,B,C or D they supported.
Responses were cross-classified by gender/year.
The response categories were:<dl>
 <dt><code>A</code></dt>
<dd>Defeat North Vietnam by widespread bombing and land invasion</dd>

 <dt><code>B</code></dt>
<dd>Maintain the present policy</dd>

 <dt><code>C</code></dt>
<dd>De-escalate military activity, stop bombing and begin negotiations</dd>

 <dt><code>D</code></dt>
<dd>Withdraw military forces Immediately</dd>


</dl>

Student Opinion about the Vietnam War — Vietnam

A frequency data frame with 40 observations representing a 2 x 5 x 4 contingency table
 on the following 4 variables.<dl>
 <dt><code>sex</code></dt>
<dd>a factor with levels <code>Female</code> <code>Male</code></dd>

 <dt><code>year</code></dt>
<dd>year of study, an ordered factor with levels
 <code>Freshmen</code>, <code>Sophomore</code>, <code>Junior</code>, <code>Senior</code>, <code>Grad student</code></dd>

 <dt><code>response</code></dt>
<dd>a factor with levels <code>A</code> <code>B</code> <code>C</code> <code>D</code></dd>

 <dt><code>Freq</code></dt>
<dd>cell frequency, a numeric vector</dd>

 
</dl>

Vietnam: Student Opinion about the Vietnam War

Description

Usage

Arguments

Format

Details

References

Examples