In SAS, a confusion matrix shows: TP=80, FP=20, FN=10, TN=90. What is the model's precision?
Select an answer to reveal the explanation.
Short Explanation and Infographic
Here's the deal — a is correct because Precision = TP / (TP + FP) = 80 / (80 + 20) = 80/100 = 0.80. B would be recall = TP/(TP+FN) = 80/90 ≈ 0.89.
Full explanation below image
Full Explanation
A is correct because Precision = TP / (TP + FP) = 80 / (80 + 20) = 80/100 = 0.80. B would be recall = TP/(TP+FN) = 80/90 ≈ 0.89. C is wrong (no formula matches 0.75 with these values). D is accuracy = (TP+TN)/(TP+FP+FN+TN) = 170/200 = 0.85 but that is not precision.