| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very Difficult | 446 |
18.4%
|
| 2 | Difficult | 859 |
35.4%
|
| 3 | Easy | 830 |
34.2%
|
| 4 | Very Easy | 125 |
5.1%
|
| 7 | Never Try | 147 |
6.1%
|
| 9 | Don't know | 21 |
0.9%
|