Problem
Write a SQL query using window functions to calculate a 7-day rolling average of orders per user.
Practicing as: Data Scientist interview at GrubMarketHi, I'll play your GrubMarket interviewer for the Data Scientist role. Candidates describe these interviews as often stressful and moderately difficult, so expect me to be direct and to the point. Take your time with the question above and answer like we're in the room.
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