Reply Data Scientist Interview Questions
The questions to prepare for a Reply Data Scientist interview. Questions from real interview reports rank first. Updated weekly.
Tests your ability to craft correct and efficient SQL for multi-table joins and time-window metric aggregation.
ReplyFind the second highest salary in each department without using aggregate functions.
Credit Genie
Devoteam
Cisco Restaurant + BarAnalyze weekly service delivery performance by team using joins, a CTE, date aggregation, and KPI calculations.
Deloitte
ReputationUse joins, CTEs, and aggregations to find the weakest step in an onboarding funnel and estimate lost conversions.
Atlassian
RevolutTests your ability to choose models based on constraints like interpretability, data, and business impact.
ReplyDiagnose a post-release KPI drop by separating instrumentation issues from real behavior changes and tracing the problem through the metric hierarchy.
ReplyIdentify major online experiment pitfalls and explain how they can bias results in a streaming product A/B test.
ReplyDefine a success metric for a new feature that captures real user value, not just raw usage.
ReplyTests your understanding of statistical significance, assumptions, and practical interpretation of results.
ReplyTests your system design skills across data extraction, processing pipelines, and analytics that support business decisions.
ReplyTests your ability to align evaluation metrics and thresholds with business costs and risk.
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