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Prep plan
Updated weekly · Last refresh Oct 17

Digitas México Data Scientist Interview Questions

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

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1
PipelinesStart here. 3 questions · ~27 min
Data Cleaning in ETL PipelinesEasy

Approach for cleaning and preparing raw data inside an ETL pipeline.

Data WranglingETLQualityDigitas México
Real-Time Dashboard Data PipelineMedium

Design a streaming pipeline that keeps dashboard data fresh and accurate for operational reporting.

InfrastructureStream ProcessingOrchestrationDigitas México
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2
A/B Testing & Experimentation3 questions · ~27 min
Pitfalls in Streaming Experiment AnalysisHard

Identify major online experiment pitfalls and explain how they can bias results in a streaming product A/B test.

Network InterferenceNovelty EffectSample Ratio MismatchDigitas México
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3
Machine Learning7 questions · ~63 min
Supervised vs Unsupervised LearningEasy

Explain how supervised and unsupervised learning differ, and ground the distinction in a practical ML example.

Unsupervised LearningFeature EngineeringBias-Variance TradeoffDigitas México
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4
Behavioral & Leadership8 questions · ~72 min
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5
More topics8 questions · ~72 min
Evaluating Observed Lift SignificanceMedium

Explain how to test whether an observed experiment lift is real using hypothesis testing, p-values, and confidence intervals.

Confidence IntervalsStatistical SignificanceP-ValuesDigitas México
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 IndicatorsDiagnosisDigitas México
Rolling 7-Day Revenue in SQLMedium
Practice

Calculate each active user's rolling seven-day revenue average with daily aggregation and window functions.

Window FunctionsDate FunctionsRunning TotalsDigitas México
North Star and Supporting KPIsMedium

Tests metric strategy and ability to connect analytics to business goals.

North Star MetricKPIsProduct VisionDigitas México
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Hands-on SQL practiceWrite and run real queries in the editor. 1 drill · ~10 min
The finish line: interview-readyComplete all 29 questions plus 1 hands-on drill to finish this plan.