Sunday, April 17, 2011

Cause & Correlation

What are the three reasons why variables may be correlated?
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1 comment:

  1. Mayri08April 17, 2011 at 8:03 PM

    1. Two variables may be correlated because X causes Y.

    2. Two variables may be correlated because Y causes X.

    3. Two variables may be correlated because they interact.

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