Welcome to your interview.
The question is on your right: Diagnose a Performance Drop. 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 are a product analyst on a B2B workforce platform. Last month, one of the core performance KPIs fell 14% versus the prior month, but the same metric has shown similar dips in the same period over the last two years. The business wants to know whether this is normal seasonality or a real issue tied to a recent product or workflow change.
How would you investigate whether a drop in performance is due to seasonality or a real issue?