Dataford
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Updated weekly · Last refresh Aug 30

BASF Data Scientist Interview Questions

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

36questions
~5htotal time
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1
Machine LearningStart here. 10 questions · ~89 min
Prevent Overfitting in ML ModelsEasy

Explain how to reduce overfitting using regularization, validation, and model selection.

Cross-ValidationBias-Variance TradeoffRegularizationBASF
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2
Behavioral & Leadership14 questions · ~124 min
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3
More topics12 questions · ~107 min
Compare Current vs Historical Customer BehaviorHard
Practice

Use window functions and CTEs to compare each customer’s latest month against their prior 3-month behavior baseline.

Window FunctionsLag/LeadDate FunctionsBASF
Turn Analysis Into ActionMedium

Explain how to connect customer analysis to clear business actions, product decisions, and measurable outcomes.

Feature PrioritizationUser NeedsValue PropositionBASF
Diagnose KPI Drop After ReleaseMedium

Diagnose a post-release KPI drop by separating instrumentation issues from real behavior changes and tracing the problem through the metric hierarchy.

KPILeading IndicatorsDiagnosisBASF
Statistical Significance in Business DecisionsEasy

Explain what statistical significance means, how p-values and confidence intervals support decisions, and why significance alone is not enough.

Hypothesis TestingStatistical SignificanceP-ValuesBASF
Design Test for New FeatureMedium

Design an A/B test for a new platform feature, including success metrics, power, guardrails, and a clear ship decision.

experiment designfeature evaluationA/B TestingBASF
Transfer Model Across LocationsHard

Evaluates model transferability, domain shift, and validation strategy.

BASF
Handle Incomplete or Messy DataMedium

Evaluates data cleaning strategy and robustness of downstream modeling.

Data WranglingQualityBASF
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Hands-on SQL practiceWrite and run real queries in the editor. 1 drill · ~10 min
SQL Duplicate DetectionEasy
Practice
Practice drill

Find duplicate customer profiles by grouping on identifying fields and returning only repeated records.

Group ByHavingAggregationsAdtalem Global EducationAmerisave MortgageCitrine Informatics
The finish line: interview-readyComplete all 36 questions plus 1 hands-on drill to finish this plan.