Question

Statement 1: To evaluate a model's performance, we need either precision or recall.
Statement 2: When the value of both Precision and Recall is 1, the F1 score is 0.

• A. Both statement 1 and statement 2 are correct.
• B. Both statement 1 and statement 2 are incorrect.
• C. Statement 1 is correct, but statement 2 is incorrect.
• D. Statement 1 is incorrect, but statement 2 is correct.

Hint:

The F1 score is 1 when both precision and recall are 1, reflecting a perfect model performance.

Answer 1

The Correct Option is C

Precision and Recall, key metrics for classification model evaluation, assess positive prediction accuracy (Precision) and the capture of all true positive instances (Recall). The F1 score, the harmonic mean of Precision and Recall, reaches 1 when both components are 1, not 0. Therefore, Statement 1 is accurate, and Statement 2 is inaccurate.