Users Outperforming Control
A medium SQL mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- SQL
- Difficulty
- medium
- Seniority
- L4
Interview Prompt
The experimentation team is identifying users who outperformed the control baseline. For each user in treatment_a whose metric value exceeds the average control value for the same test, show the user ID, their treatment value, and the average control value.
Summary
Treatment beat control. For these users.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write your sql solution with real code execution
- Get instant feedback and a hire/no-hire decision