12 general econometrics questions for you: 1. What is econometrics and how does it differ from economics? 2. Explain the concept of causality in econometrics. 3. What are the assumptions of linear regression? 4. What is the difference between endogenous and exogenous variables in econometric models? 5. How do you test for heteroscedasticity in a regression model? 6. What is the purpose of instrumental variables in econometrics? 7. What is the difference between time series and cross-sectional data? 8. How do you interpret the coefficient of determination (R-squared) in a regression analysis? 9. Discuss the concept of autocorrelation in time series analysis. 10. Explain the difference between stationary and non-stationary time series data. 11. What are the steps involved in building a panel data regression model? 12. How do you test for multicollinearity among independent variables in econometrics?