Other's On-Line Resources (Chapter 16)

 

Bivariate Regression
  • Description:
    In using this interactive on-line resource, you can put data points into a scatter diagram and then see (1) the regression line and (2) the regression equation, both of which are generated specifically for YOUR data.

  • What to Do:
    1. Click on the colored title of this on-line resource: "Bivariate Regression."
    2. Click several times in the white area on the left side of the screen. Each time you click, a data point will appear.
    3. Watch for changes in the regression line and the regression equation following each data point that you add.
    4. Click on the "Clear" button, and start over. This time, try to create a geometric pattern with you data points, and then look to see what happens to the regression line.

  • Sky Huck's Puzzle Question:
    The vertical axis is not marked off with numbers. The number 0 should have been positioned near the bottom of this "Y-axis," just where it crosses the horizontal axis. But what number should have been positioned at the top of the Y-axis? It's possible to figure this out. Can you?
     
Multiple Regression
  • Description:
    Although this site is non-interactive, it contains helpful text-based information, tables, and regression equations that will reinforce things you've read in the middle section of Chapter 19. The main topics covered in this on-line resource include (1) Introduction, (2) Significance Tests, (3) Shrinkage, and (4) Measuring a Variable's Importance.

  • What to Do:
    1. Click on the colored title of this on-line resource: "Multiple Regression."
    2. Read carefully what's said on each screen, and move to the next screen by clicking the "Next" button or the clickable that says "Next section."
    3. You'll come across several words that are links to brief but helpful explanations of what a term means. Don't pass up the opportunity to gain a handle on these terms by using the available links.

  • Sky Huck's Puzzle Question:
    In the section called "Measuring the Importance of Variables," you'll encounter the concept of "usefulness." What concept from Chapter 19 addresses this same concept?
     
Logistic Regression
  • Description:
    Although this on-line resource is text-based only (and not interactive), it contains helpful information for anyone who wants to learn about logistic regression. However, much of the material contained in this resource is quite advanced. If you are just beginning your effort to learn about logistic regression, you'll need to jump over the parts that are too difficult and instead focus only on those sections that you can understand and digest..

  • What to Do:
    1. Click on the colored title of this on-line resource: "Logistic Regression."
    2. On the screen that pops up, read the first 2 paragraphs of the "Overview" and then skim through the next section, "Key Terms and Concepts."
    3. Skim the section entitled, "Assumptions."
    4. Read each of the entries in the section entitled "Frequently Asked Questions," and click on those that are of interest to you.


     

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Schuyler W. Huck
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