= =SUM(N2:N_last)
Add a new column L: = difference between consecutive FPR values: =K3-K2 (drag down)
AUC ≥ 0.8 is generally considered good; 0.9+ is excellent.
Sort your data by Predicted Probability in descending order (highest to lowest). This ensures thresholds are evaluated from most confident positive to least confident.

