Deloitte Data Scientist Interview Questions
The questions to prepare for a Deloitte Data Scientist interview. Questions from real interview reports rank first. Updated weekly.
Use PostgreSQL window functions to calculate user running spend and rank users by total spend within each signup cohort.
DeloitteCompute top 10 customers by net sales using joins and aggregations, ordering by revenue with deterministic tie-breaking.
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TCS
Zest AICombine customer transactions and optional notes using INNER JOIN, LEFT JOIN, aggregation, and conditional spend bands.
Supernova TechnologyDeloitteExplain what statistical significance means, how p-values and confidence intervals support decisions, and why significance alone is not enough.
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Explain how regression and classification differ, including target type, outputs, and how you evaluate each.
DeloitteDefine one primary feature metric and a set of guardrails that capture user value without missing broader product risk.
DeloitteDiagnose a post-release KPI drop by separating instrumentation issues from real behavior changes and tracing the problem through the metric hierarchy.
DeloitteApproach for cleaning and preparing raw data inside an ETL pipeline.
DeloitteDesign a marketing campaign experiment with a pre-registered metric plan, power calculation, and ship rule that respects guardrails.
DeloitteTests your ability to select metrics, validation strategy, and interpret results for ML models.
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