Freelancer Data Scientist Interview Questions
The questions to prepare for a Freelancer Data Scientist interview. Questions from real interview reports rank first. Updated daily.
Design and analyze an A/B test for a new email campaign, including metrics, power, guardrails, and common experiment risks.
Design a landing-page A/B test with clear metrics, power, and significance criteria while guarding against common experiment pitfalls.
Probes metric design thinking for evaluating new landing pages on Freelancer.
Assesses understanding of joint distributions and probability ordering.
Calculate each user's seven-day rolling average of daily events using PostgreSQL window functions.
Diagnose a below-expectations product metric drop using decomposition, guardrails, and experiment checks.
Evaluates fundamental ML ensemble knowledge and explanation ability.
Explain INNER JOIN vs LEFT JOIN and describe a many-to-one relationship using card transaction data.
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Identify each user's consecutive website activity streaks using date arithmetic and SQL window functions.
Intuit Management Consultancy
Chewy
SuperhumanCalculate each study's six-month rolling average of patient enrollment using PostgreSQL window functions.