Problem
Explain the concept of statistical power and how you would determine the sample size needed for an experiment on a low-traffic feature at Slack.
Practicing as: Data Scientist interview at SlackHi, I'll play your Slack interviewer for the Data Scientist role. Candidates describe these interviews as mixed and moderately difficult, so expect me to be professional and fair. Take your time with the question above and answer like we're in the room.
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