A/B Testing: Metrics, Denominators and Guardrails

A/B Testing: Metrics, Denominators and Guardrails

Answer 15 questions randomly selected from a bank of 30. Choose one best answer per question. Pass with 12 correct answers. Original practice material, not an official certification exam.
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An experiment assigns users to A or B, but analyzes each session as if it were an independent user. What should be reviewed?