Question: 4. a. Compute the ROC Curve (5) Class Tuple # 1 2 3 P n P P n P Prob. 0.95 0.85 0.78 0.66 0.60

4. a. Compute the ROC Curve (5) Class Tuple # 1 2 3 P n P P n P Prob. 0.95 0.85 0.78 0.66 0.60 0.55 0.53 0.52 0.51 0.4 n n 7 8 9 10 n P b. If there is a cost associated with wrong classification (that you intend to minimize), what would be your best threshold value from the probability table to minimize the cost? (5) Actual/predicted P N P 0 2 N 10 0

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