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<document xmlns="http://cnx.rice.edu/cnxml" xmlns:md="http://cnx.rice.edu/mdml/0.4" xmlns:m="http://www.w3.org/1998/Math/MathML" xmlns:bib="http://bibtexml.sf.net/" id="m11212">

  <name>Guessing Correlations Simulation</name>
  <metadata>
  <md:version>1.3</md:version>
  <md:created>2003/05/30</md:created>
  <md:revised>2003/07/18 10:39:38.254 GMT-5</md:revised>
  <md:authorlist>
    <md:author id="dmlane">
      <md:firstname>David</md:firstname>
      
      <md:surname>Lane</md:surname>
      <md:email>lane@rice.edu</md:email>
    </md:author>
  </md:authorlist>

  <md:maintainerlist>
    <md:maintainer id="dmlane">
      <md:firstname>David</md:firstname>
      
      <md:surname>Lane</md:surname>
      <md:email>lane@rice.edu</md:email>
    </md:maintainer>
    <md:maintainer id="mjeanes">
      <md:firstname>Matthew</md:firstname>
      
      <md:surname>Jeanes</md:surname>
      <md:email>mjeanes@rice.edu</md:email>
    </md:maintainer>
  </md:maintainerlist>
  
  

  <md:abstract/>
</metadata>

  <content>
    <para id="beginby">
      Begin by answering the questions, even if you have to guess. The
      first time you answer the questions you will not be told whether
      you are correct or not.
    </para>

    <para id="onceyou">
      Once you have answered all the questions, answer them again
      using the simulation to help you. This time you will get
      feedback about each individual answer.
    </para>

    <para id="showsim">
      <cnxn target="genins">Show Simulation</cnxn>
    </para>
    
    <para id="applet">
      This demonstration does not have questions associated with
      it. Use it to improve your understanding of what scatter plots
      of data with different values of r lool like.
    </para>
    
    <section id="genins">
      <name>General Instructions</name>
      <para id="thisdem">
	This demonstration allows you to learn about Pearson's
	correlation by viewing scatter plots with different values of
	Pearson's r. In each case, you will have an opportunity to
	guess the correlation. With a little practice, you should get
	pretty good at it.
      </para>
    </section>
    
    <section id="stepbystep">
      <name>Step by Step Instructions</name>
      <para id="link">
	<cnxn target="beginby">Show Questions</cnxn>
      </para>
      
      <para id="clickthe">
	Click the button next to the correlation that you think is
	present in the scatter plot. You will find out if you were
	right or wrong. If you were wrong, try another value. Then
	click the "New data" button.
      </para>

      <media type="application/x-java-applet" src="regr.regr.class">
	<param name="archive" value="regr.jar"/>
	<param name="width" value="425"/>
	<param name="height" value="360"/>
	<param name="name" value="regr"/>
      </media>
      
    </section>
    <section id="summary">
      <name>Summary</name>
      <para id="summ">
	After looking at a series of scatterplots, you should have a
	pretty good feel for what a certain value of r means.
      </para>
    </section> 
  </content>
  
</document>
