Top 30
Prep plan
Updated weekly · Last refresh Aug 30

vidIQ Data Scientist Interview Questions

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

30questions
~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 TradeoffvidIQ
Handling Missing Data in MLMedium

Explain practical strategies for handling missing data and how to validate that the chosen approach improves model performance.

Feature EngineeringData WranglingSupervised LearningvidIQ
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2
Metrics3 questions · ~24 min
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 MismatchvidIQ
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4
Behavioral & Leadership10 questions · ~81 min
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5
More topics7 questions · ~57 min
Prioritize Marketing Strategy DataMedium

Framework for deciding which data matters most when shaping a marketing strategy.

Feature PrioritizationUser NeedsProduct VisionvidIQ
Seasonality vs Product Issue DetectionHard

Use time-series decomposition and intervention analysis to tell normal seasonal movement from a true product problem.

RegressionCorrelationTime SeriesvidIQ
SQL Window Functions for RetentionMedium

Tests SQL proficiency with window functions for cohort and retention analysis.

Window FunctionsDate FunctionsRunning TotalsvidIQ
NLP and SQL FundamentalsMedium

Evaluates your foundational NLP and SQL skills for analytics and modeling work.

NLPsqlvidIQ
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
The finish line: interview-readyComplete all 30 questions plus 3 hands-on drills to finish this plan.