1. How do you interpret dummy and categorical variables?
2. How do you interpret a log-log, log-level, and a level-log model?
3. What is goodness of fit? What are the different measures? How do you measure R2?
4. What are the six assumptions for OLS? Which are for inference?
5. When is the ZCM assumption violated? (3 conditions)
6. How do you interpret the slope of a polynomial in a OLS model?
7. Explain the application of a T-test and F-test.
8. What are the three goodness of fit measures?
9. What are endogenous variables?
10. How do you interpret a RESET test?
11. What is absolute and relative effect?
12. Explain heterogeneity of effects.
13. What is the difference between internal and external validity?
14. Why do we use robust standard errors?