| 卡方检验 | 自由度 | Prob > chi2 |
1 | 12.7062 | 9 | 0.17636 |
2 | 18.8726 | 9 | 0.02630 |
3 | 10.3589 | 9 | 0.32222 |
4 | 6.3050 | 9 | 0.70905 |
5 | 6.7672 | 9 | 0.66134 |