Econometrics is an economic discipline based on certain economic theories and statistical data, using mathematics, statistical methods and computer technology, and establishing econometric models as the main means to quantitatively analyze and study the relationship between economic variables with random characteristics. The main contents include theoretical econometrics and applied econometrics. Theoretical econometrics mainly studies how to use, transform and develop mathematical statistics methods to make them a special method to measure stochastic economic relations.
Applied econometrics is to study the practicability of economic mathematical models or explore empirical economic laws with econometric methods under the guidance of certain economic theories and based on statistical data reflecting facts.