Top 18
Prep plan
Updated weekly · Last refresh Nov 6

Themis Insight Data Scientist Interview Questions

The questions to prepare for a Themis Insight Data Scientist interview. Questions from real interview reports rank first. Updated daily.

18questions
~3htotal time
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1
SQL & Data ManipulationStart here. 3 questions + 2 drills · ~46 min
2
Product Sense3 questions · ~26 min
Balance Conversion and RetentionHard

Framework for deciding when to favor short-term conversion gains versus long-term retention in a product decision.

Feature PrioritizationUser NeedsValue PropositionThemis Insight
Define Launch Success MetricsMedium

Approach for choosing launch success metrics, including a north star, leading indicators, and clear success criteria.

Product-Market FitUser NeedsKPIThemis Insight
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3
A/B Testing & Experimentation5 questions · ~43 min
Common Pitfalls in Experiment ResultsHard

Identify the main pitfalls that can distort A/B test interpretation and explain how to guard against them.

PeekingNovelty EffectSample Ratio MismatchThemis Insight
Determine A/B Test Sample SizeHard

Determine A/B test sample size from baseline rate, MDE, significance level, and power, then validate the calculation through simulation.

experiment designMDEexperimental designThemis Insight
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4
Behavioral & Leadership4 questions · ~35 min
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5
More topics3 questions · ~26 min
First Checks for Metric DropsEasy

Outline the first checks to diagnose a sudden drop in a core product metric, starting with data quality, scope, and decomposition.

Lagging IndicatorsLeading IndicatorsDiagnosisThemis Insight
Explain Statistical SignificanceMedium

Assesses communication skills for conveying statistical ideas to non-technical audiences.

CommunicationStatistical SignificanceThemis Insight
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The finish line: interview-readyComplete all 18 questions plus 2 hands-on drills to finish this plan.