Cleo (United Kingdom) Data Scientist Interview Questions
The questions to prepare for a Cleo (United Kingdom) Data Scientist interview. Questions from real interview reports rank first. Updated daily.
Explain how to prioritize long-term clinical outcomes when short-term engagement metrics point in a different direction.
Diagnose a 5% drop in Intercom daily active users, separating data quality issues from real changes in user behavior.
Explain how to design, power, monitor, and analyze an A/B test so its conclusions are statistically and practically valid.
Explain an A/B test end to end, including hypothesis, metrics, power, randomization, analysis, pitfalls, and the launch decision.
Calculate the sample size needed for statistical significance using baseline rate, MDE, alpha, power, and experiment constraints.
Given two tables, write a query to find users who haven't made a transaction in the last 30 days. Use PostgreSQL's CURRENTDATE as the reference date. Trea...
Explain what statistical significance means and why it matters when interpreting experimental or analytical results.
Calculate each user's 7-day rolling transaction average and daily spend rank using PostgreSQL window functions.
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