| 变量 | Lnincome | Lnedu | Family |
| 参数估计值 | 0.5157 | 1.5074 | −0.9979 |
| t统计量 | 15.4165 | 22.6747 | −25.5578 |
| p统计量 | 0.0000 | 0.0000 | 0.0000 |
| R2 | 0.9596 | 0.9809 | 0.9849 |
|
| 0.9555 | 0.9790 | 0.9834 |