フリー問題

問題文

In a payments dataset, 998 of every 1,000 transactions are legitimate. A model that labels every single transaction legitimate is reported as 99.8 percent correct. Which figure exposes that the model is useless to the fraud team?

選択肢

1. The figure that exposes this is recall for the fraud class.
2. The figure that exposes this is specificity for the fraud class.
3. The figure that exposes this is accuracy for the fraud class.
4. The figure that exposes this is throughput for the fraud class.