Weee Data Scientist Interview Questions
The questions to prepare for a Weee Data Scientist interview. Questions from real interview reports rank first. Updated weekly.
Use ROW_NUMBER to return each customer's second most recent Meta Marketplace purchase.
WeeeExplain how to structure a cohort retention query using cohort assignment, period offsets, and aggregation in PostgreSQL.
WeeeFind the top 3 users by completed transaction volume in the last 30 days using joins and aggregation.
Revolut
ChimeUse a join, aggregation, and ROW_NUMBER to find the top three DoorDash merchants by completed sales in each city.
DoorDashDesign an A/B test for a new checkout installment-flow feature, including metrics, power, guardrails, and a disciplined ship decision.
WeeeIdentify the main pitfalls that can distort A/B test interpretation and explain how to guard against them.
WeeeExplain what statistical significance means and why it matters when interpreting experimental or analytical results.
WeeeTests ability to interpret statistical significance for product decisions.
WeeeTests product sense and ability to translate business goals into actionable customer definitions.
WeeeOutline the first checks to diagnose a sudden drop in a core product metric, starting with data quality, scope, and decomposition.
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