| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very Difficult | 596 |
24.5%
|
| 2 | Difficult | 846 |
34.8%
|
| 3 | Easy | 325 |
13.4%
|
| 4 | Very Easy | 40 |
1.6%
|
| 7 | Never Try | 551 |
22.7%
|
| 9 | Don't know | 70 |
2.9%
|