1. Hypothesis Testing (confidence and prediction intervals) -useful in judgement of whether the variables are significant；
2. Maximum Likelihood Estimation -another kind of estimation method that can be used in almost all sorts of econometrics models；

3. Multicollinearity, Heteroscedasticity and Autocorrelation -three common phenomena that violate the classical linear hypothesis；

4. Time Series Regression -useful in regressions which use time series data

这种题目大答案并不固定,只是检验一下初学者对这些名词的掌握程度而已.