| Value | Category | Cases | |
|---|---|---|---|
| 1 | a. Very difficult | 118 |
3.2%
|
| 2 | b. Somewhat difficult | 106 |
2.9%
|
| 3 | c. Somewhat easy | 377 |
10.3%
|
| 4 | d. very easy | 854 |
23.4%
|
| Missing value | 2194 |
60.1%
|