Slack Data Scientist Interview Questions
The questions to prepare for a Slack Data Scientist interview. Questions from real interview reports rank first. Updated weekly.
Compute daily active users and a 7-day rolling average using a CTE, distinct counts, and window functions.
SlackFind the top five Slack users by message activity in a fixed timeframe using a CTE, LEFT JOIN, aggregation, and deterministic ordering.
SlackCalculate month-1 retention for January vs February signup cohorts using joins, date filtering, and aggregation.
Trideum
Zulily
eBayDiagnose a post-release KPI drop by separating instrumentation issues from real behavior changes and tracing the problem through the metric hierarchy.
SlackAssess whether FinMate's onboarding redesign drove real gains in activation, retention, and conversion, and define how to report its impact.
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Interpret an experiment where the short-term primary metric improves but long-term retention worsens, and decide whether to ship.
SlackExplain when network interference threatens an A/B test, how it biases estimates, and how to redesign the experiment safely.
SlackTests product sense for feature rollout decisions across Slack customer segments.
SlackTests knowledge of hypothesis testing and selecting appropriate statistical tests.
SlackTests statistical thinking for causal comparison across segments in Slack platform data.
Slack