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Updated weekly · Last refresh Oct 17

Syntes Data Scientist Interview Questions

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

34questions
~5htotal time
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1
Machine LearningStart here. 6 questions · ~53 min
Handling Imbalanced Fraud LabelsMedium

Explain how to train and evaluate models on highly imbalanced fraud data without relying on misleading accuracy.

Cross-ValidationFeature EngineeringSupervised LearningSyntes
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2
A/B Testing & Experimentation3 questions · ~26 min
Power Analysis for Survey ExperimentHard

Determine sample size and power for a customer survey or experiment, including MDE, guardrails, and a disciplined decision rule.

MDEPower AnalysisSample SizeSyntes
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3
Behavioral & Leadership14 questions · ~124 min
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4
More topics11 questions · ~97 min
7-Day Rolling Active UsersMedium
Practice

Compute daily active users and a 7-day rolling average using a CTE, distinct counts, and window functions.

Window FunctionsDate FunctionsRunning TotalsSyntes
Interpreting Significance in ExperimentsMedium

Explain statistical significance in experiments and how p-values and confidence intervals guide interpretation.

Confidence IntervalsStatistical SignificanceP-ValuesSyntes
Define Metrics for New FeaturesMedium

Define a success metric for a new feature that captures real user value, not just raw usage.

MetricsFeature Prioritizationuser valueSyntes
Diagnose a Metric Drop After LaunchMedium

Investigate why a key KPI moved the wrong way after a product change and separate signal from noise.

Lagging IndicatorsLeading IndicatorsDiagnosisSyntes
Baseline for Model PerformanceMedium

Tests your understanding of baseline selection and fair comparison for model evaluation.

model performanceSyntes
Architecture Trade-OffsMedium

Evaluates your ability to justify system design choices and trade-offs for ML/DS pipelines.

system designarchitectureSyntes
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Hands-on SQL practiceWrite and run real queries in the editor. 1 drill · ~10 min
7-Day Rolling User Average in SQLMedium
Practice
Practice drill

Calculate each user's seven-day rolling average of daily events using PostgreSQL window functions.

Window FunctionsDate FunctionsData ManipulationBounteousFFreelancerBBoston Tech India
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