Top 29
Prep plan
Updated weekly · Last refresh Aug 30

Basis Technologies Data Scientist Interview Questions

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

29questions
~4htotal time
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1
SQL & Data ManipulationStart here. 3 questions + 1 drill · ~37 min
2
A/B Testing & Experimentation5 questions · ~45 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 SizeBasis Technologies
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3
Machine Learning4 questions · ~36 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 TradeoffBasis Technologies
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4
Model Evaluation3 questions · ~27 min
Explain Precision Recall TradeoffEasy

Explain precision versus recall in plain language and how the tradeoff affects product decisions.

PrecisionThreshold TuningRecallBasis Technologies
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5
Behavioral & Leadership8 questions · ~72 min
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6
More topics6 questions · ~54 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-ValuesBasis Technologies
Define Metrics for New FeaturesMedium

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

MetricsFeature Prioritizationuser valueBasis Technologies
Using Dashboards to Read KPIsEasy

Explain how visualization tools help analysts track KPIs, spot patterns, and support decisions.

KPIsData WranglingDiagnosisBasis Technologies
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The finish line: interview-readyComplete all 29 questions plus 1 hands-on drill to finish this plan.