Value | Category | Cases | |
---|---|---|---|
-9 | NIU (not in universe) | 543 |
83%
|
1 | very easy | 21 |
3.2%
|
2 | somewhat easy | 13 |
2%
|
3 | not easy/not difficult | 3 |
0.5%
|
4 | somewhat difficult | 4 |
0.6%
|
5 | very difficult | 4 |
0.6%
|
9999995 | missing:impute | 66 |
10.1%
|