May 14 - variables of interest (enrollment in a school...

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May 14, 2008 Multiple regression Review: Causation o Three general conditions Empirical association Time order Non-spuriousness o The third, non-spuriousness, is important This is why we “statistically control” for that third factor Controlling for a third variable o We need to remove the joint influence of a third variable (home education) on our
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Unformatted text preview: variables of interest (enrollment in a school program and school achievement) o Boots camps and recidivism (p508) (I have a hand written example if you would like to see it)...
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