Difference between Trade Gravity Model and Multiple Linear Regression Model

Trade gravity model and multiple linear regression model have different uses and basic ideas, as follows:

1, different uses: the trade gravity model can be used to simulate the migration and flow between different regions. Multiple linear regression model can be used to describe the relationship between independent variables and dependent variables.

2. The basic idea is different: the basic idea of the trade gravity model is that the migration and flow of population in various regions are affected by the "gravity" between the source and the destination. The basic idea of multiple linear regression model is to better understand the relationship between multiple variables and provide decision support for decision makers.