项目 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
难度P值 | 0.382 | 0.401 | 0.304 | 0.349 | 0.359 | 0.361 | 0.394 | 0.479 | 0.322 |
Pearson相关 | 0.397*** | 0.540*** | 0.451*** | 0.519*** | 0.463*** | 0.510*** | 0.513*** | 0.392*** | 0.407*** |