回归估计的标准误
回归估计的标准误（Standard error of regression estimation）
1、回归方程是一种预测，但并未给出预测准确性的信息；
2、回归估计的标准误给出回归线和数据点之间标准距离的量度；
1. The regression equation is a prediction, but it does not give information about the accuracy of the prediction;
2, the standard error of regression estimation gives a measure of the standard distance between the regression line and the data point;
如何计算回归估计的标准误（How to calculate the standard error of regression estimation）
1、首先计算误差和方（First calculate the error sum of squares）
SSerror=
2、将误差的和方除以自由度，开方
自由度为：df = n-2 Divide the sum of the errors by the degrees of freedom, square root
The degrees of freedom are: df = n-2
Serror=
标准误和相关系数之间的关系（The relationship between standard error and correlation coefficient）
SSerror=(1 - r2) SSY
回归估计的标准误.txt · 最后更改: 2024/04/12 11:40 由 aiyuheng