12. 1 Basic Principles of Building Macroeconomic mode o Static economics Static analysis: exogenous variables+parameters==>endogenous variables o Comparative static economics o Comparative static analysis: exogenous variables==>endogenous variables o Dynamic economics s Dynamic analysis: endogenous variables 友学经济学院12.1 Basic Principles of Building Macroeconomic Model  Static economics ❖ Static analysis: exogenous variables+parameters==>endogenous variables  Comparative static economics ❖ Comparative static analysis：exogenous variables==>endogenous variables  Dynamic economics ❖ Dynamic analysis: endogenous variables