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Outline the components of a distributed A/B testing system that ensures statistical validity and prevents experiment collision.
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Data Analyst
Marketer
General
Focus on randomization, user assignment persistence, experiment layering, statistical power calculations, and monitoring infrastructure with collision detection mechanisms.
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Very hard Difficulty
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System Design question
System Design questions evaluate your ability to architect complex software solutions. Demonstrate your approach to requirements analysis, component design, scalability considerations, and how you make architectural trade-offs.