ex0524

These data are annual incomes in 2005 for 2,584 Americans who were selected in 
 the National Longitudinal Study of Youth 1979, who were available for re-
 interview in 2006, and who had paying jobs in 2005, along with the quartile
 of their AFQT (IQ) test score taken in 1981. How strong is the evidence that 
 the distributions of 2005 annual incomes differ in the four populations? By 
 how many dollars or by what percent does the distribution of 2005 incomes for 
 those within the highest (fourth) quartile of IQ test scores exceed the 
 distribution for the lowest (first) quartile?

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)"

ex0524 function

A data frame with 2,584 observations on the following 3 variables.<dl class="dl-horizontal">
 <dt>Subject</dt><dd>subject identification number</dd>
 <dt>IQquartile</dt><dd>a factor with levels <code>"1stQuartile"</code>,
 <code>"2ndQuartile"</code>, <code>"3rdQuartile"</code> and <code>"4thQuartile"</code></dd>
 <dt>Income2005</dt><dd>annual income in U.S. dollars, 2005</dd>
 </dl>

Format

IQ and Future Income — ex0524

A data frame with 2,584 observations on the following 3 variables.<dl class='dl-horizontal'>
 <dt>Subject</dt><dd>subject identification number</dd>
 <dt>IQquartile</dt><dd>a factor with levels <code>"1stQuartile"</code>,
 <code>"2ndQuartile"</code>, <code>"3rdQuartile"</code> and <code>"4thQuartile"</code></dd>
 <dt>Income2005</dt><dd>annual income in U.S. dollars, 2005</dd>
 </dl>

ex0524: IQ and Future Income

Description

Usage

Arguments

Format

References

See Also

Examples