Your question is Regression for Product Change Impact. 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).
You are analyzing a product change that rolled out partway through the quarter. Revenue moved at the same time, but traffic, seasonality, and other campaigns were also changing.
How would you use regression to isolate the impact of a product change on revenue?