回归分析方程的一般表达式为y=a+bx主要作用在于给出自变量的数值,来估计因变量的可能值,可能值又称理论值或估计值。在一元线性回归方程中,自变量的系数b称为回归系数,表明y对x的回归关系。a、b的导出过程略。 The general expression of regression analysis equation is: y = a + bx The main function is to give the value of the independent variable to estimate the possible value of the dependent variable. The possible value is also called the theoretical value or the estimated value. In the unary linear regression equation, the coefficient b of the independent variable is called the regression coefficient, indicating the regression relationship between y and x. a, b export process omitted.