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Updated weekly · Last refresh Nov 6
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Baer Data Scientist Interview Questions

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

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1
Behavioral & LeadershipStart here. 4 questions · ~41 min
Mentor and Advocate Best PracticesHard

Tests mentorship, technical influence, and ownership of sustainable coding practices within a data engineering team.

best practicesMentorshipcoding practicesBBaer
Resolving Cross-Functional MiscommunicationEasy

Tests conflict resolution and stakeholder communication when working with a cross-functional partner.

Conflict ResolutionCommunicationcross-functional collaborationBBaer
Leading an Ambiguous Technical ProjectMedium

Tests leading through technical ambiguity by creating clarity, prioritizing decisions, and driving aligned execution under uncertainty.

technical ambiguityLeadershipProject ManagementBBaer
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2
More topics5 questions · ~51 min
Rolling Average with Window FunctionsMedium
Practice

Calculate daily sales and a date-based 30-day rolling average using PostgreSQL window functions.

Date FunctionsData ManipulationAggregationsBBaer
A/B Testing MethodsMedium

Explain which A/B test methods you use, and why, including hypothesis tests and confidence intervals.

Confidence IntervalsHypothesis TestingStatistical SignificanceBBaer
Design a New Engagement MetricHard

Define a meaningful engagement metric for a retail analytics mobile application and explain how to validate it.

product metricsMetricsuser engagementBBaer
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 IndicatorsDiagnosisBBaer
Explain Statistical SignificanceMedium

Explain statistical significance, p-values, practical importance, and uncertainty to a non-technical stakeholder.

Hypothesis TestingCommunicationStatistical SignificanceBBaer

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Hands-on SQL practiceWrite and run real queries in the editor. 2 drills · ~20 min
SQL for Top 5% Daily UsersMedium
Practice
Practice drill

Identify the top 5% of users by average daily active usage during the previous calendar quarter.

analyticsDate FunctionsData ManipulationOkta
Compute DAU Rate by MarketMedium
Practice
Practice drill

Calculate daily TikTok DAU and the percentage of eligible market users active each day.

MetricsDate FunctionsJoinsTikTok
The finish line: interview-readyComplete all 9 questions plus 2 hands-on drills to finish this plan.