# Red Analyze Tool – Statistics – Receiver Operator Characteristics (ROC)

The Receiver Operator Characteristics (ROC) curve measures the Sensitivity over the Specificity, given a specific threshold.

- Sensitivity is the ability to detect a Positive result (has a defect).
- Specificity is the ability to detect a Negative result (no defect).

This is performed by evaluating the results between the two thresholds.