Problem
How would you use SQL window functions to calculate a Bumble user's rolling 7-day engagement and rank users within each cohort?
Practicing as: Data Scientist interview at BumbleHi, I'll play your Bumble 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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