|   模型y1  |       B  |       标准错误  |       T  |       显著性  |       VIF  |    
|   常量  |       212239.928  |       43493.975  |       4.880  |       0.000**  |       
  |    
|   x1  |       −51898.592  |       9957.186  |       −5.212  |       0.000**  |       1.259  |    
|   x2  |       16.283  |       49.539  |       0.329  |       0.747  |       4.948  |    
|   x4  |       4.356  |       1.572  |       2.770  |       0.014*  |       4.902  |