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Review Outline:
1. Population Model and Model Assumptions
2. Statistical Tests (t-test and F-test)
3. Changing Units of Measurement
4. Log and Level Models
5. Failure of Model Assumptions
6. Variance of OLS Estimator
7. Quadratics and Interactions
8. Indicator Variables
9. Fixed E↵ects
10. 1st Di↵erencing
see attached