Gusto Data Scientist Interview Questions
The questions to prepare for a Gusto Data Scientist interview. Questions from real interview reports rank first. Updated weekly.
Use joins, CTEs, and monthly aggregation to compute Google Maps active users and month-over-month growth.
GustoExplain how INNER JOIN and LEFT JOIN affect missing records and when to use each while debugging data mismatches.
GustoUse ROW_NUMBER() to keep the earliest created_at 'Repl created' per entity and return out-of-order duplicates to delete.
Replit
QuantcastCompute top 10 customers by net sales using joins and aggregations, ordering by revenue with deterministic tie-breaking.
Gain Digital
TCS
Zest AIExplain how to train and evaluate a churn model when churn is rare and standard accuracy is misleading.
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Investigate why a key KPI moved the wrong way after a product change and separate signal from noise.
GustoDesign a payroll onboarding A/B test with explicit anti-peeking rules, power analysis, and ship criteria tied to guardrails.
GustoTests experiment design, instrumentation, and success criteria for a payroll product change.
GustoExplain how to test whether an observed experiment lift is real using hypothesis testing, p-values, and confidence intervals.
GustoTests metric selection and evaluation design for recommendation systems in health benefits.
Gusto