| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very Difficult | 131 |
5.9%
|
| 2 | Difficult | 379 |
17.1%
|
| 3 | Easy | 976 |
44.2%
|
| 4 | Very Easy | 261 |
11.8%
|
| 7 | Never Try | 439 |
19.9%
|
| 9 | Don't know | 24 |
1.1%
|