Your question is Campaign Effectiveness Statistics. 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).
What statistical methods would you use to determine the effectiveness of a marketing campaign? Explain how you would choose an experimental design, define success metrics, estimate incremental lift, test statistical significance, and report uncertainty. Address confounding, segment differences, practical significance, power, and limitations when randomization is unavailable.
