Optum Tech Data Scientist Interview Questions
The questions to prepare for a Optum Tech Data Scientist interview. Questions from real interview reports rank first. Updated weekly.
Explain how feature engineering improves supervised models and how to choose useful transformations.
Optum TechChoose useful features for a supervised model and avoid overfitting, leakage, and unstable predictors.
Optum TechExplain what statistical significance means and why it matters when interpreting experimental or analytical results.
Optum TechTests your ability to write correct code quickly and reason through data transformations under time pressure.
Optum TechFind all active Freecharge employees at the third-highest distinct salary using DENSE_RANK and a department join.
Freecharge
BrillioOptum TechCalculate a three-day moving average of active-client revenue using aggregation and SQL window functions.
AArete
MITRE
GlassdoorCalculate a calendar-aware 7-day average of Samsara incident counts using CTEs and window functions.
SamsaraHow to validate a machine learning model and interpret whether its metrics are trustworthy.
Optum TechIdentify the main pitfalls that can distort A/B test interpretation and explain how to guard against them.
Optum TechAssesses your ability to define measurable outcomes aligned to product goals and patient impact.
Optum TechEvaluates product thinking and your ability to translate outcomes into clear, trustworthy visualizations.
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