Welcome to your interview for the Data Scientist role at St Engineering.
The question is on your right: Pitfalls in A/B Testing. 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. You have three graded attempts to score 7/10 or better.
What pitfalls can invalidate an A/B test, such as novelty effects, network interference, or sample ratio mismatch?