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Updated weekly · Last refresh Oct 17

LexisNexis Risk Solutions Data Scientist Interview Questions

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

50questions
~7htotal time
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1
SQL & Data ManipulationStart here. 3 questions + 2 drills · ~45 min
2
Model Evaluation3 questions · ~25 min
Build Reliable Model Evaluation ProcessMedium

Outline a practical evaluation process for making ML models reliable, including validation, calibration, thresholding, and error analysis.

PrecisionAccuracyRecallLexisNexis Risk Solutions
Model Evaluation MetricsHard

Select appropriate metrics for evaluating a model, considering task type, error costs, class balance, and deployment goals.

performance evaluationmodel performanceevaluation metricsLexisNexis Risk Solutions
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3
Machine Learning11 questions · ~92 min
Feature Engineering for Supervised ModelsEasy

Explain feature engineering and why transforming raw inputs can materially improve supervised model performance.

Cross-ValidationFeature EngineeringSupervised LearningLexisNexis Risk Solutions
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4
A/B Testing & Experimentation7 questions · ~58 min
Sample Size for Checkout TestMedium

Design a checkout A/B test and compute the sample size needed to detect a 2% relative lift in purchase conversion within 14 days.

MDEPower AnalysisSample SizeLexisNexis Risk Solutions
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5
Statistics & Probability7 questions · ~58 min
Interpreting Significance in ExperimentsMedium

Explain statistical significance in experiments and how p-values and confidence intervals guide interpretation.

Confidence IntervalsStatistical SignificanceP-ValuesLexisNexis Risk Solutions
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6
Metrics4 questions · ~33 min
Analyze New Feature EngagementMedium

Assess a new feature using adoption, activation, repeat usage, and retention metrics tied to user value.

Leading IndicatorsA/B TestingEngagement MetricsLexisNexis Risk Solutions
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7
More topics15 questions · ~125 min
Risk Model Metric FrameworkMedium

Tests your ability to translate risk model outcomes into actionable product and operational metrics.

product metricsRisk AssessmentLexisNexis Risk Solutions
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The finish line: interview-readyComplete all 50 questions plus 2 hands-on drills to finish this plan.