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90th Pctl Model Accuracy Gap

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
mid

Interview Prompt

The ML platform team is auditing model quality for the first half of 2026. They set a target accuracy of 0.95 and want to identify outlier models whose accuracy deviates most from that target. Compute the absolute gap between each model's accuracy and 0.95, then surface only the models in the 90th percentile of that gap. Return the model name, its accuracy, and the gap as a decimal value.

How This Interview Works

  1. Read the vague prompt (just like a real interview)
  2. Ask clarifying questions to the AI interviewer
  3. Write your sql solution with real code execution
  4. Get instant feedback and a hire/no-hire decision