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Homework Help: Statistics help, please.

  1. Apr 18, 2005 #1
    :bugeye:
    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?

    And:

    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

    OlderDan

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    Science Advisor
    Homework Helper

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

    http://www.ruf.rice.edu/~lane/stat_sim/comp_r/index.html

    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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