|   模型y2  |       B  |       标准错误  |       T  |       显著性  |       VIF  |    
|   常量  |       7344.764  |       2051.954  |       3.579  |       0.003**  |       
  |    
|   x1  |       −1523.906  |       483.858  |       −3.149  |       0.007**  |       1.246  |    
|   x4  |       0.429  |       0.042  |       10.269  |       0.000**  |       1.246  |