Diagnose Decline in First Day Funding Rate
RobinhoodData Scientist · Technical Screen
Last updated
Diagnose Decline in First Day Funding Rate evaluates metric design, causal reasoning, experiment setup, diagnostics, SQL/statistical checks, and recommendations in a realistic interview setting. A strong answer states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.
Scenario
Product analytics team observes the ‘First Day Funding Rate’—the share of users funding on their first day—has dropped and must identify why.
Question
The percentage of new customers who fund their account on day-1 has fallen. How would you systematically diagnose this decline? Which external and internal factors would you examine? If those are ruled out, what other angles would you explore?
Hints
Break metric into numerator/denominator, segment by cohort, traffic source, funnel step, seasonality, UI/feature changes, experiments, and external market shifts.
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