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Unformatted text preview: le and also is related to the explanatory variable. The effect of a confounding variable on the response variable cannot be separated from the effect of the explanatory variable. Confounding variables might be measured and accounted for in the analysis, or they could be unmeasured lurking variables. Confounding variables are especially a problem in observational studies. Randomized experiments help control the influence of confounding variables. Try It! Student’s Health Study A researcher at the University of Michigan believes that the number of times a student visits the Student Health Center (SHC) is strong...
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This document was uploaded on 02/25/2014 for the course STATS 250 at University of Michigan.
- Summer '10