| قيمة | فئة | حالات | |
|---|---|---|---|
| 0 | 633 |
40%
|
|
| 1 | 598 |
37.8%
|
|
| 2 | 310 |
19.6%
|
|
| 3 | 34 |
2.1%
|
|
| 4 | 7 |
0.4%
|