CRED Data Scientist Interview Questions
The questions to prepare for a CRED Data Scientist interview. Questions from real interview reports rank first. Updated daily.
Calculate each user's 7-day rolling transaction average and daily spend rank using PostgreSQL window functions.
Identify the highest-volume customers from the last completed quarter using joins, aggregation, and deterministic ranking.
Use a self-join to group CRED referral cohorts and measure successful payments within users' first 30 days.
Framework for deciding when to favor short-term conversion gains versus long-term retention in a product decision.
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Explain why correlated customer behaviors do not by themselves prove a causal effect, and how you would tell the difference.
Explain why a statistically significant experiment result may still be too small to matter for product or business decisions.
Design an A/B test for a new platform feature, including success metrics, power, guardrails, and a clear ship decision.
Investigate whether a performance decline is seasonal or a real product issue.
Evaluates your understanding of core classification modeling and linear model assumptions.