Problem
Scenario
You work on a digital product team and have run an A/B test on a user experience change intended to improve engagement with a core flow. Early results look promising, but stakeholders want to know whether the lift is real, meaningful, and safe to launch broadly.
Question
What is your experience with A/B testing, and how do you analyze the results? Walk through how you would frame the hypothesis, choose metrics, size the test, interpret significance, and decide whether to ship.
Metrics to Define
Practicing as: Data Analyst interview at TelefónicaHi, I'll play your Telefónica interviewer for the Data Analyst 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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