HKT Services Data Scientist Interview Questions
The questions to prepare for a HKT Services 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.
HKT ServicesUse ROW_NUMBER to return each student's second score on a specified Khan Academy exercise.
Khan AcademyFind the top 3 users by completed transaction volume in the last 30 days using joins and aggregation.
Revolut
ChimeDecide whether a multi-armed bandit is appropriate for a growth experiment versus a fixed-horizon A/B/n test.
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Framework for deciding when to favor short-term conversion gains versus long-term retention in a product decision.
HKT ServicesExplain what statistical significance means and why it matters when interpreting experimental or analytical results.
HKT ServicesDiagnose why conversion fell from 4.8% to 3.1% after a launch by breaking the metric across funnel steps, cohorts, and segments.
HKT ServicesAssesses your understanding of LLM fine-tuning concepts and practical considerations.
HKT ServicesExplain your approach to model evaluation, including how you choose and interpret metrics for different ML problems.
HKT ServicesTests your end-to-end pipeline design knowledge including ingestion, processing, orchestration, and monitoring.
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