Problem
How would you design an A/B test for a new ad ranking change at Known, including the primary metric, guardrails, and how you would avoid common experimentation pitfalls?
Practicing as: Data Scientist interview at KnownHi, I'll play your Known 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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