ML functional performance metrics · Question 47 of 60
A confusion matrix is presented with swapped axes: row "actually positive": 70 predicted positive, 30 predicted negative; row "actually negative": 10 predicted positive, 890 predicted negative. Which values are correct?
3 answers are correct. Hard
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Answer
- A Recall 70%
- C Precision 87.5%
- E Accuracy 96%
Explanation
From the table, TP = 70, FN = 30, FP = 10 and TN = 890. Recall = 70 / 100 = 70%, precision = 70 / 80 = 87.5%, accuracy = (70 + 890) / 1000 = 96%. The matrix may be presented differently, but it always yields the four values TP, TN, FP and FN.