The Sparks Foundation Data Scientist Interview Questions
The questions to prepare for a The Sparks Foundation Data Scientist interview. Questions from real interview reports rank first. Updated weekly.
Use CTEs, joins, and month-based aggregation to calculate cohort retention over time from signup and activity data.
The Sparks FoundationCompare batch and stream processing across latency, complexity, cost, and data quality in a modern analytics pipeline.
The Sparks FoundationExplain practical strategies for handling missing data and how to validate that the chosen approach improves model performance.
The Sparks FoundationDetermine sample size and power for a customer survey or experiment, including MDE, guardrails, and a disciplined decision rule.
The Sparks FoundationPick a North Star Metric that reflects customer value, business impact, and long-term product health.
The Sparks FoundationExplain how to choose an appropriate significance test based on metric type, study design, and the null hypothesis.
The Sparks FoundationDesign a recommendation and ranking system that handles cold start for both new users and new items without hurting feed quality.
The Sparks FoundationExplain which classification metrics to use and how metric choice depends on the business objective and error tradeoffs.
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