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