Section 9.2 gave a list of five potential threats to the internal validity of a regression study.

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Section 9.2 gave a list of five potential threats to the internal validity of a regression study. Apply this list to the empirical analysis in Section 10.6 and thereby draw conclusions about its internal validity.
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Introduction to Econometrics

ISBN: 978-0133595420

3rd edition

Authors: James H. Stock, Mark W. Watson

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