Value | Category | Cases | |
---|---|---|---|
-9 | NIU (not in universe) | 543 |
83%
|
1 | very easy | 9 |
1.4%
|
2 | somewhat easy | 17 |
2.6%
|
3 | not easy/not difficult | 6 |
0.9%
|
4 | somewhat difficult | 11 |
1.7%
|
5 | very difficult | 2 |
0.3%
|
9999995 | missing:impute | 66 |
10.1%
|