Optum Technology Data Scientist Interview Questions
The questions to prepare for a Optum Technology Data Scientist interview. Questions from real interview reports rank first. Updated daily.
Explain how L1 and L2 regularization differ geometrically and probabilistically, grounded in a practical supervised learning example.
Optum TechnologyExplain how to test whether an observed experiment lift is real using hypothesis testing, p-values, and confidence intervals.
Optum TechnologyExplain how a primary metric differs from a guardrail metric and how both are used in A/B test decisions.
Optum TechnologyDiagnose a post-release KPI drop by separating instrumentation issues from real behavior changes and tracing the problem through the metric hierarchy.
Optum TechnologyTests your understanding of evaluation metrics for healthcare prediction tasks and tradeoffs.
Optum TechnologyTests your product thinking for defining measurable, user-centered engagement metrics in healthcare.
Optum TechnologyCompare consecutive monthly patient utilization using aggregation and LAG, including utilization changes and percentage changes.
Optum TechnologyTests your ability to architect scalable data and ML pipelines for large-scale healthcare datasets.
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Use a window function to return each department's transactions tied at the second-highest amount.
TredenceOptum TechnologyCalculate monthly cohort retention using date-based cohorts, aggregation, and window functions.