REWE Group Data Scientist Interview Questions
The questions to prepare for a REWE Group Data Scientist interview. Questions from real interview reports rank first. Updated daily.
Assesses ownership, adaptability, prioritization, and stakeholder management when a data project encounters unexpected obstacles.
Tests prioritization under pressure, stakeholder management, and decision-making when multiple teams compete for limited analyst capacity.
Identify transactions with missing fields or store-level amount outliers using PostgreSQL data-quality logic.
Compare interpretable and high-performing models for banking decisions, then justify the accuracy, transparency, fairness, and governance trade-off.
Explain how to select, execute, and interpret statistical significance tests for A/B test results.
Investigate why a key KPI moved the wrong way after a product change and separate signal from noise.
Calculate daily sales and a date-based 30-day rolling average using PostgreSQL window functions.
Identify the main pitfalls that can distort A/B test interpretation and explain how to guard against them.
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