AYES Data Scientist Interview Questions
The questions to prepare for a AYES Data Scientist interview. Questions from real interview reports rank first. Updated daily.
Define a success metric for a new feature that captures real user value, not just raw usage.
Tests root-cause analysis of sudden metric drops in AYES products.
Identify the main pitfalls that can distort A/B test interpretation and explain how to guard against them.
Tests interpretation of statistical significance within product decisions.
Compute daily active users and a 7-day rolling average using a CTE, distinct counts, and window functions.
Outline the first checks to diagnose a sudden drop in a core product metric, starting with data quality, scope, and decomposition.
Evaluates methods to achieve and verify statistical significance in experiments.
Tests creation of retention metrics and long-term user engagement analysis.
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Calculate each user's running order total over time using a window function.
Bayer
Sparksoft
Western DigitalCalculate each customer's cumulative transaction amount over time using a CTE and window function.
Banco Santander
Anz
Bank Of Tokyo-Mitsubishi UFJ