A study found that professors tend to give higher grades to students who take more than one
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A study found that professors tend to give higher grades to students who take more than one course from the professor than to students who take only one course from the professor, suggesting that professors reward students who come back for more. Identify the most important statistical bias in this sample and describe a (hypothetical) controlled experiment that would get rid of this problem.
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Related Book For
Essential Statistics Regression And Econometrics
ISBN: 9780123822215
1st Edition
Authors: Gary Smith
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