Data Scientist Interview Questions

Showing 331–360 of 513 results

• MetaHard·Data Scientist
  Identify non-table data for feature demand

  The question evaluates a data scientist's competency in triangulating product demand from non-table sources, defining and de-biasing signals, specifying metrics and guardrails, and designing evidence-driven experiments within the Analytics & Experimentation domain for a Data Scientist role.

  Analytics & ExperimentationTechnical Screen
• MetaMedium·Data Scientist
  Interpreting confidence intervals to choose a treatment

  Evaluates confidence-interval interpretation for choosing among feed-ranking treatments with engagement losses. Strong answers compare statistical significance, magnitude, uncertainty, business thresholds, downside risk, and launch recommendations.

  Analytics & ExperimentationOnsite
• MetaHard·Data Scientist
  Investigate Reasons for Higher Instagram Story Consumption

  Evaluates diagnostic analytics for explaining why Instagram users consume more Stories than Facebook users. Strong answers validate metric parity, decompose supply and demand drivers, use cohort and within-user comparisons, and propose experiments for UI, ranking, content, or notification hypotheses.

  Analytics & ExperimentationOnsite
• MetaEasy·Data Scientist
  Investigate why an advertiser’s spend decreased

  This question tests your ability to systematically isolate the root cause of a drop in advertising spend by decomposing metrics and evaluating external versus internal factors.

  Analytics & ExperimentationTechnical ScreenRoot Cause AnalysisMetrics DecompositionAdTech
• MetaHard·Data Scientist
  Justify building a new feature with evidence

  This question evaluates a data scientist's product analytics, experimental design, and strategic decision-making skills, covering market sizing, competitive analysis, privacy-aware data and infrastructure assessment, risk identification, and A/B testing planning.

  Analytics & ExperimentationOnsite
• MetaMedium·Data Scientist
  Measure Harmful Content Impact with Key Metrics

  This interview question evaluates metric design, causal reasoning, experiment setup, diagnostics, SQL/statistical checks, and recommendations in a realistic interview setting. A strong answer for Measure Harmful Content Impact with Key Metrics states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.

  Analytics & ExperimentationTechnical Screen
• MetaMedium·Data Scientist
  Measure a friend-recommendation launch

  This question evaluates experiment design, metric selection, causal inference and business-metric translation for social features, including defining primary and guardrail metrics, choosing experimental units to mitigate network interference, and estimating revenue impact from observed lifts.

  Analytics & ExperimentationOnsite
• MetaMedium·Data Scientist
  Measure and mitigate notification spam

  This question tests the ability to design an experimentation framework for notification systems while accounting for user fatigue, long-term ecosystem health, and signal interference.

  Analytics & ExperimentationTechnical ScreenExperimentationProduct MetricsCausal Inference
• MetaHard·Data Scientist
  Measure impact of bot mitigation via experiment

  This question evaluates experiment design and causal inference skills for platform analytics, covering interference management, metric and guardrail definition, power and duration calculations, eligibility and exclusions, novelty/adaptation considerations, and diagnostics for bot‑mitigation interventions.

  Analytics & ExperimentationOnsite
• MetaMedium·Data Scientist
  Measure scheduled posts feature success

  This question evaluates proficiency in Bayesian statistical estimation, experimental design, product metric definition, and causal/confounder analysis for measuring feature reliability and engagement.

  Analytics & ExperimentationOnsite
• MetaHard·Data Scientist
  Prove friends outperform unconnected; design metrics, observational analysis, and rollout experiment

  A Meta data-scientist technical-screen question on Analytics & Experimentation: using only info_stream_views and post_reactions, prove whether Friend-authored content is 'more social' than Unconnected content. It tests denominator-complete metric design with relationship attribution, observational causal validation (fixed effects + propensity/AIPW), and a network-aware rollout experiment with power, CUPED, interference mitigations, and guardrails — plus quantifying the long-term and discovery value of Unconnected content beyond near-term engagement.

  Analytics & ExperimentationTechnical Screen
• MetaHard·Data Scientist
  Prove high-quality pixels improve ad performance

  This question tests your ability to design a rigorous causal experiment to validate a product hypothesis while accounting for selection bias, confounding variables, and operational constraints.

  Analytics & ExperimentationTechnical ScreenCausal InferenceExperiment DesignMetric Strategy
• MetaHard·Data Scientist
  Prove source growth is cannibalization, not incremental

  This question evaluates causal inference and experimental-design competencies in analytics, testing skills in identification strategy, treatment and control definition, specification of difference‑in‑differences or randomized geo experiments, metric construction, power calculations, and robustness checks for attribution and cannibalization analysis. It is commonly asked to determine whether observed growth is incremental or substitution-driven, falls under the Analytics & Experimentation domain in Data Science, and emphasizes practical application accompanied by conceptual understanding of identification assumptions, statistical power, and measurement.

  Analytics & ExperimentationOnsite
• MetaMedium·Data Scientist
  Redesign an executive dashboard for C-suite

  This question evaluates skills in dashboard design, data visualization, metric selection, and executive-level analytical communication for product and growth measurement.

  Analytics & ExperimentationOnsite
• MetaMedium·Data Scientist
  Reduce variance with covariate adjustment

  This question evaluates a data scientist's competency in experimental design, variance reduction techniques, and regression-based covariate adjustment (CUPED/ANCOVA) within randomized A/B tests, including understanding of statistical power and diagnostic checks.

  Analytics & ExperimentationOnsite
• MetaMedium·Data Scientist
  Run a clean A/B test for recommendations

  This question evaluates a data scientist's competency in experimental design, causal inference, and statistical power analysis for A/B tests, covering randomization unit choice, contamination prevention, metric and guardrail selection, clustering adjustments, and bias-control techniques.

  Analytics & ExperimentationOnsite
• MetaMedium·Data Scientist
  Select and prioritize metrics with guardrails

  This question evaluates a candidate's ability to design a robust metrics framework for product experiments, covering selection and normalization of success metrics, feature-only sizing and ecosystem metrics, explicit cannibalization reads, guardrails, multiple-testing control, and back-of-the-envelope LTV/ARPDAU impact estimation.

  Analytics & ExperimentationTechnical Screen
• MetaHard·Data Scientist
  Should We Launch Group Calling?

  A Meta Data Scientist technical-screen case: using only one-to-one call logs, decide whether to build a group calling feature and how to measure a launch's success. It tests product analytics, proxy-metric design, network analysis, causal inference, and experiment design under social-network interference.

  Analytics & ExperimentationTechnical Screen
• MetaMedium·Data Scientist
  Size opportunity for new product line

  This question evaluates a data scientist's skills in financial opportunity sizing, sensitivity analysis, and experimental design by requiring quantitative modeling of impacted users, incremental orders, revenue, and gross profit for a proposed product line.

  Analytics & ExperimentationOnsite
• MetaHard·Data Scientist
  Test if social users are more engaged

  This problem tests your ability to design an analytical framework to measure user engagement, account for selection bias in non-randomized groups, and define robust metrics for comparing heterogeneous user populations.

  Analytics & ExperimentationOnsiteAnalyticsCausal InferenceSelection Bias
• MetaMedium·Data Scientist
  Track Metrics to Measure Push Notification Quality

  Track Metrics to Measure Push Notification Quality evaluates metric design, causal reasoning, experiment setup, diagnostics, SQL/statistical checks, and recommendations in a realistic interview setting. A strong answer states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.

  Analytics & ExperimentationOnsite
• MetaHard·Data Scientist
  Track Success and Guardrail Metrics for Push Notifications

  Evaluates success and guardrail metrics for a push-notification feature in a networked travel app. Strong answers measure incremental itinerary engagement and retention, monitor opt-outs and fatigue, and design a cluster or graph-aware experiment to reduce spillovers.

  Analytics & ExperimentationTechnical Screen
• MetaHard·Data Scientist
  Uncover User Needs for Group Calling Effectively

  Meta product analytics prompt on group calling, covering user-needs surveys, competitor benchmarking without direct data, experiment design, network effects, contamination, metrics, and guardrails.

  Analytics & ExperimentationTechnical Screen
• MetaMedium·Data Scientist
  [Analytical Reasoning] Comparing Two Newsfeed Ad Insertion Methods

  Compare independent versus blocked ad insertion in a 100-post feed. Includes expected ads, tail risk, consecutive ad probabilities, longest streaks, product tradeoffs, and A/B test design.

  Analytics & ExperimentationOnsite
• MicrosoftMedium·Data Scientist
  Design Testing Without A/B Experiments

  This question evaluates a data scientist's mastery of causal inference, observational study methods, metric definition, experimental design trade-offs, and failure-mode analysis when randomized A/B testing is infeasible.

  Analytics & ExperimentationTechnical Screen
• MicrosoftMedium·Data Scientist
  Evaluate a Product Change That Adds More User Options

  This question tests the ability to design an A/B test for a feature introducing choice-overload, specifically focusing on metric selection, trade-off analysis, and decision-making frameworks when metrics diverge.

  Analytics & ExperimentationOnsiteExperimentationA/B TestingProduct Metrics
• MicrosoftMedium·Data Scientist
  How would you estimate impact without A/B?

  This question tests your ability to design quasi-experimental methods to infer causal impact when randomization is not possible due to technical or business constraints.

  Analytics & ExperimentationTechnical ScreenCausal InferenceQuasi-experimentsDiD
• NetflixMedium·Data Scientist
  Compute ITT, TOT, and LATE with noncompliance

  This question evaluates understanding of causal inference and experimental analysis, specifically estimation and interpretation of ITT, TOT, and LATE under noncompliance along with classification of compliance types (compliers, always-takers, never-takers, defiers).

  Analytics & ExperimentationOnsite
• NetflixHard·Data Scientist
  Design A/B Test for Streaming Feature Network Effects

  This interview question evaluates metric design, causal reasoning, experiment setup, diagnostics, SQL/statistical checks, and recommendations in a realistic interview setting. A strong answer for Design A/B Test for Streaming Feature Network Effects states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.

  Analytics & ExperimentationOther
• NetflixMedium·Data Scientist
  Design experiment on culture memo emphasis

  This question tests the ability to design a rigorous A/B test for a qualitative product change, focusing on metric selection, potential bias mitigation, and pre-experimental planning.

  Analytics & ExperimentationHR ScreenA/B TestingExperiment DesignMetrics