________ is not used as a performance metric for a regression model.

________ is not used as a performance metric for a regression model.

  1. a) R²
  2. b) RMSE
  3. c) Recall
  4. d) MAE

From the BCS Technical Cadre (ICT) October 2025 – 49th BCS Written (Special) (BPSC) exam, question 4 of 106.

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