Bias-Variance Trade-off: Diagnose and Fix a Model
Asked at Capital One · ML Fundamentals & Algorithms · Difficulty: Medium · Last asked Feb 4, 2026
A model you trained for a credit-risk task performs worse than expected. Use the bias-variance trade-off to explain why a model can fail in two opposite ways, how you would tell which one you are facing, and what you would change in each case.
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