Table 2. Control Difficulty and Discriminatory Performance.
| Q | Pi | Pi Classification | Di | Di Classification |
|---|---|---|---|---|
| 1 | 75.0% | Mod. Easy | 35.80 | Good |
| 2 | 46.4% | Mod. Difficulty | 78.60 | Excellent |
| 3 | 82.1% | Mod. Easy | 21.50 | Mediocre |
| 4 | 60.7% | Medium | 21.40 | Mediocre |
| 5 | 53.6% | Medium | 64.50 | Excellent |
| 6 | 67.9% | Medium | 50 | Excellent |
| 7 | 96.4% | Very Easy | 7.10 | Poor |
| 8 | 75.0% | Mod. Easy | 7.20 | Poor |
| 9 | 82.1% | Mod. Easy | 35.70 | Good |
| 10 | 85.0% | Mod. Easy | -14.30 | Worst |
| 11 | 60.7% | Medium | 64.30 | Excellent |
| 12 | 78.6% | Mod. Easy | 42.90 | Excellent |
| 13 | 75.0% | Mod. Easy | 35.80 | Good |
| 14 | 78.6% | Mod. Easy | 28.60 | Mediocre |
| 15 | 71.4% | Mod. Easy | 42.90 | Excellent |
| 16 | 71.4% | Mod. Easy | 28.60 | Mediocre |
| 17 | 71.4% | Mod. Easy | 14.30 | Poor |
| 18 | 50.0% | Mod. Difficulty | 14.20 | Poor |
| 19 | 60.7% | Medium | 7.20 | Poor |
| 20 | 71.4% | Mod. Easy | 42.90 | Excellent |
| 21 | 60.7% | Medium | 35.70 | Good |
| 22 | 85.7% | Mod. Easy | 28.60 | Mediocre |
| 23 | 82.1% | Mod. Easy | 7.10 | Poor |
| 24 | 50.0% | Mod. Difficulty | 42.80 | Excellent |
| 25 | 67.9% | Medium | 35.70 | Good |
| 26 | 35.7% | Mod. Difficulty | 57.20 | Excellent |
| 27 | 57.1% | Medium | 57.10 | Excellent |
| 28 | 75.0% | Mod. Easy | 50 | Excellent |
| 29 | 78.6% | Mod. Easy | 0 | Poor |
| 30 | 82.1% | Mod. Easy | 35.70 | Good |
| 31 | 46.4% | Mod. Difficulty | 21.40 | Mediocre |
| 32 | 57.1% | Medium | 42.90 | Excellent |
| 33 | 67.9% | Medium | 35.70 | Good |
| 34 | 67.9% | Medium | 21.60 | Mediocre |
| 35 | 64.3% | Medium | 28.60 | Mediocre |
| 36 | 85.7% | Mod. Easy | 14.30 | Poor |
| X | 68.82% | Medium | 31.77 | Good |
Pi = Item’s difficulty
Di = Item's ability to differentiate between those who are high and low