Your question is Model Performance Evaluation. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
How do you evaluate the performance of a machine learning model?
Explain a practical evaluation process from defining the task and selecting an appropriate metric through validation, error analysis, and final recommendation. Address how the approach differs for classification and regression, and mention how you would avoid misleading results from data leakage or an unrepresentative test set.