Question 61.5 PointsWhy might the overall prediction accuracy of a classification model be a misleading measure of performance? (choose the best answer) If some outcomes are relatively rare, then a classifier may appear accurate despite that it never predicts those rare outcomes. Sometimes the accuracy metric is simply incorrect. Accuracy is subjective; it does not have a generally accepted definition in machine learning.

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Why might the overall prediction accuracy of a classification model be a misleading measure of performance?

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1.5 Points

Why might the overall prediction accuracy of a classification model be a misleading measure of performance? (choose the best answer)

If some outcomes are relatively rare, then a classifier may appear accurate despite that it never predicts those rare outcomes.
Sometimes the accuracy metric is simply incorrect.
Accuracy is subjective; it does not have a generally accepted definition in machine learning.

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