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The t-test between the annotations made by medical Expert-I and II.
| Class | Annotations by medical expert-I (X) | Annotations by medical expert-II (Y) | D = (X–Y) | D2 = (X–Y)2 |
|---|---|---|---|---|
| Normal | 651 | 628 | 23 | 529 |
| Doubtful | 528 | 551 | −23 | 529 |
| Mild | 279 | 279 | 0 | 0 |
| Moderate | 260 | 260 | 0 | 0 |
| Severe | 282 | 282 | 0 | 0 |
| Total | ΣD=0 | ΣD2=1,058 |
