Modelling Technique

Description

Please rewrite the essay below, or write a new one about what is Linear Regression and why I should use linear regression to analysis. 150 – 200 words, one reference needed. ”’Correlation analysis studies the correlation between phenomena, the direction and closeness of correlation, and generally does not distinguish between independent variables or dependent variables. Regression analysis must analyse the specific forms of correlation between phenomena, determine the causal relationship, and use mathematical models to express the specific relationship. For example, from the correlation analysis, it can be known that the variables of “course performance” and “salary after graduation” are closely related, but which variable between these two variables is affected by which variable, and the degree of influence, requires regression analysis Method to determine. Generally speaking, regression analysis is to determine the causal relationship between dependent variables and independent variables, establish a regression model, and solve the various parameters of the model based on the measured data, and then evaluate whether the regression model can fit the measured The data, if it can fit well, can be further predicted based on the independent variables. ”’