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A significant portion of the material—and often the focus of most PPT presentations—deals with what happens when the ideal conditions of OLS fail. Gujarati provides a systematic framework for identifying and fixing three major issues: Multicollinearity: When independent variables are too closely related. Heteroscedasticity: basic econometrics gujarati ppt portable
Avoiding omission of relevant variables or inclusion of irrelevant ones. Part III: Topics in Econometrics You can find comprehensive chapter-by-chapter slide decks on