Uplift

scenario

Inference with severely skewed revenue

Statistics & Inference · Regression Intuition · medium · Reported interview question · 15 min

Customer revenue is zero for many users and has a very long right tail. A stakeholder asks whether average revenue differs between two independent groups. Explain what you would inspect, which estimand and method you would choose, and how you would communicate the result.

Evaluation criteria

  • States a clear recommendation
  • Supports it with the right metrics or test design
  • Names the trade-offs and risks

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Source

Adapted from a publicly reported interview question on StrataScratch(opens in a new tab).

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