最小二乘估计的几个结论及证明

Least Squares Estimation of Several Proof of the Conclusion

就线性回归模型中参数估计最常用的估计方法——最小二乘估计法得出几个结论并给出相应的证明.

Parameter estimation of linear regression model in the most commonly used method to estimate-- least squares estimation method draws several conclusions and gives the corresponding proof.