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Homework Help: Statistics help, please.

  1. Apr 18, 2005 #1
    I'm working on regression. Here's the question.

    If r = .77, what proportion of the change in Y is due to the change in X?


    If r = -.68, how much of the change in y is not related to the change in X?

    I guess I was in orbit or something the day we covered this. Thanks for any help anybody can give me. Many, many thanks.
  2. jcsd
  3. Apr 18, 2005 #2


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    If you have a Java enabled browser, you can learn a lot about this topic from the simulation you will find here.


    It's worth your time. There are several other statistics demos at this site worth exploring.

    For one thing, you will find

    r^2 = explained/(explained + unexplained).
    Last edited: Apr 18, 2005
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