Part IV

Violations of Classical Regression Model Assumptions

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pt_webextra_bw.TIF For a veritable crash course in econometrics basics, including an easily absorbed rundown of the three most common estimation problems, access this book's e-Cheat Sheet at www.dummies.com/extras/econometrics.

In this part . . .

check  Understand the nature of the most commonly violated assumptions of the classical linear regression model (CLRM): multi­collinearity, heteroskedasticity, and autocorrelation.

check  Use standard procedures to evaluate the severity of assumption violations in your model.

check  Evaluate the consequences of common estimation problems.

check  Apply remedies to address multicollinearity, heteroskedasticity, and autocorrelation.

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