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Updated weekly · Last refresh Aug 30

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 weekly.

28questions
~4htotal time
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1
Machine LearningStart here. 7 questions · ~57 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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2
Pipelines3 questions · ~24 min
Data Cleaning in ETL PipelinesEasy

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

Data WranglingETLQualityDigitas México
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3
A/B Testing & Experimentation3 questions · ~24 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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4
Behavioral & Leadership8 questions · ~65 min
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5
More topics7 questions · ~57 min
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
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
North Star and Supporting KPIsMedium

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

North Star MetricKPIsProduct VisionDigitas México
Handling Missing DataEasy

Tests practical data cleaning decisions and impact on downstream analysis quality.

Data WranglingCase WhenAggregationsDigitas México
Build a Marketing KPI DashboardMedium

Design a dashboard that connects campaign activity, funnel conversion, and acquisition efficiency to business outcomes.

North Star MetricKPIsLeading IndicatorsDigitas México
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
SQL Top 3 Campaigns by ConversionMedium
Practice
Practice drill

Rank the top three Digitas México campaigns each month using aggregation and ROW_NUMBER.

Window FunctionsRankingAggregationsDigitas México
SQL 7-Day Rolling Average SalesMedium
Practice
Practice drill

Calculate seven-day rolling product sales averages using daily aggregation and window functions.

Window FunctionsDate FunctionsRunning TotalsDigitas México
Monthly Sales Trends by CategoryMedium
Practice
Practice drill

Aggregate monthly sales by product category and use LAG to calculate month-over-month changes.

InfrastructureToolsData WranglingTotal Wine & MoreInc.Benjamin Moore
The finish line: interview-readyComplete all 28 questions plus 3 hands-on drills to finish this plan.