Other's OnLine Resources (Chapter 16)
Bivariate
Regression 
 Description:
In using this interactive online 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:
 Click on the colored title of this online resource: "Bivariate
Regression."
 Click several times in the white area on the left side of
the screen. Each time you click, a data point will appear.
 Watch for changes in the regression line and the regression
equation following each data point that you add.
 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 "Yaxis,"
just where it crosses the horizontal axis. But what number should
have been positioned at the top of the Yaxis? It's possible to
figure this out. Can you?

Multiple
Regression 
 Description:
Although this site is noninteractive, it contains helpful textbased
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 online resource include (1) Introduction,
(2) Significance Tests, (3) Shrinkage, and (4) Measuring a Variable's
Importance.
 What to Do:
 Click on the colored title of this online resource: "Multiple
Regression."
 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."
 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 online resource is textbased 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:
 Click on the colored title of this online resource: "Logistic
Regression."
 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."
 Skim the section entitled, "Assumptions."
 Read each of the entries in the section entitled "Frequently
Asked Questions," and click on those that are of interest
to you.

