Welcome to your interview.
The question is on your right: Evaluate Whether a Model Is Overfitting. Take a moment with it first.
Talk your thinking through with me if you like - when you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes). Discussion and graded submissions share your five interviewer interactions, so spend them well.
You have trained a model that looks strong on the data it learned from, but the team is worried it may not hold up on new examples. You need to decide whether the gap is real or just normal variation.
How would you evaluate whether a model is overfitting?