Analyzing Smoking and Lung Cancer

Recommended Explorations of Correlation Coefficient:

• (Resource #1 for use during the activity)
  • Visit http://sunsite.univie.ac.at/Spreadsite/statexamp and open the Correlation Visualized file. When the dialog box appears, choose Pick Application and open Microsoft Excel (or save to a local disk and open with Excel later). Use the application to explore scatterplots and the associated correlation coefficients.
    
    
• Visit http://www.stat.uiuc.edu/~stat100/java/GCApplet/GCAppletFrame.html . Use this java applet to test your ability to estimate correlation coefficients given a scatterplot image.

Recommended Explorations of Least Squares Regression:

• (Resource #2 for use during the activity)
  • Visit http://www.exploremath.com/activities/Activity_page.cfm?ActivityID=6  Use this web page to explore what is meant by a least squares linear regression line. OR
    
    
  • Visit http://forum.swarthmore.edu/dynamic/java_gsp/squares.html . Use this JavaSketchpad application to explore what is meant by a least squares linear regression line. (This "Least Squares" activity can also be found in the Algebra and Analytic Geometry folder in the Sample Sketch folder of The Geometer Sketchpad.)
    
    

• Visit http://www.math.uah.edu/stat/sample/sample9.html .  Scroll down to #14 on the page and use the Interactive Scatterplot (click on the red die) to explore the effect of data points on the correlation and the best fit line.

• Visit http://www.stat.sc.edu/~west/javahtml/Regression.html . Use this site to explore the effect of an additional data point on the least squares regression line.

• Visit http://www.stat.uiuc.edu/~stat100/java/guess/PPApplet.html. Use this site to explore regression lines and residuals.