Problem
How would you use SQL window functions to compute a 7-day rolling retention metric and compare cohorts over time?
Practicing as: Data Scientist interview at JOHNSON HEALTH TECH TRADINGHi, I'll play your JOHNSON HEALTH TECH TRADING interviewer for the Data Scientist role. Candidates describe these interviews as mostly positive and moderately difficult, so expect me to be friendly and conversational. Take your time with the question above and answer like we're in the room.
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