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Analytics & Experimentation Interview Questions

Practice 9403 coding, system design and machine learning questions from 546 companies, sorted by role, topic and interview round. Every question has step-by-step hints, a code runner that supports 8 languages and an AI mentor; members also get the full solution walkthrough.

9403
Questions
546
Companies
11
Topics
8
Languages

Showing 451–480 of 560 results

  • PinterestHardData Scientist
    Investigate Homepage Experiment Without Control Group: Methods and Metrics

    Evaluates quasi-experimental analysis and product-metric judgment after a homepage launch lacks a randomized control. Strong answers compare matching and propensity weighting, audit experiment hygiene, choose metrics, and diagnose mixed CTR results.

    Analytics & ExperimentationOnsite
  • PinterestMediumData Scientist
    Measure Billboard Campaign Impact: Design, Bias, Test Strategy

    This question assesses your ability to design a quasi-experimental framework for measuring the offline impact of an online brand campaign on user acquisition, accounting for external noise and selection bias.

    Analytics & ExperimentationOnsiteCausal InferenceGeo-ExperimentsMetric Design
  • PinterestMediumData Scientist
    Size an Opportunity and Present It with Clear Visuals

    Tests your ability to size an ambiguous product opportunity using top-down and bottom-up estimation, stress-test core assumptions with sensitivity analysis, and design executive-ready visuals to guide strategic investment decisions.

    Analytics & ExperimentationOnsiteopportunity sizingproduct analyticsdata visualization
  • PlaystationMediumData Scientist
    Design Experiments Under Network Interference

    This problem tests your understanding of causal inference in networked environments, focusing on how to detect and mitigate bias when treatment effects spill over between connected users in a social gaming platform.

    Analytics & ExperimentationTechnical ScreenCausal InferenceA/B TestingNetwork Science
  • QuoraMediumData Scientist
    Test a Post-Creation Tab While Accounting for User Interference

    Design an experiment for a post-creation tab with creator–reader spillovers, cluster-aware analysis and an evidence-based launch decision.

    Analytics & ExperimentationTechnical Screen
  • RedditEasyData Scientist
    Design A/B test for AI chat box

    This question tests the ability to define metrics, design an A/B testing framework, and account for potential biases when deploying a new AI-powered chat feature.

    Analytics & ExperimentationOnsiteA/B TestingProduct AnalyticsMetrics
  • RedditEasyData Scientist
    Design experiment for ads in chat with budgets

    This question tests the ability to design an A/B test for a new ad placement in a chat feature while accounting for budget constraints and potential network effects.

    Analytics & ExperimentationOnsiteA/B TestingCausal InferenceExperiment Design
  • RedditHardData Scientist
    Estimate Incremental Search-Ad Revenue Without an A/B Test

    Design an evaluation framework to estimate the incremental search-ad revenue of a small-scale manual pilot, incorporating variance reduction, inference under heavy-tailed revenue, and ecosystem cannibalization.

    Analytics & ExperimentationOnsiteexperimentationcausal-inferencead-tech
  • RedditEasyData Scientist
    Measure impact of ads-manager automation feature

    This question tests your ability to design an evaluation framework for a new feature, specifically focusing on causal inference, metric selection, and identifying potential biases in a two-sided marketplace.

    Analytics & ExperimentationOnsiteA/B TestingCausal InferenceMetrics
  • RevolutHardData Analyst
    Define Ultra success and detect suspicious transactions

    This question evaluates a candidate's skills in product analytics, cohort and retention measurement, SQL-based metric design and segmentation, and rule-based fraud detection using transactional and activity data.

    Analytics & ExperimentationTechnical Screen
  • RevolutEasyData Scientist
    Define Ultra success metrics and detect suspicious transactions

    This question evaluates a data scientist's ability to define primary, diagnostic, and guardrail metrics for a product launch and to design rule-based suspicious-transaction detection using available schema, emphasizing metric definition, defensible proxy selection, SQL-based data modeling, and financial-crime domain knowledge.

    Analytics & ExperimentationTechnical Screen
  • RobinhoodEasyData Scientist
    Design an experiment to launch fractional shares

    This question evaluates a candidate's competency in experimentation design, product analytics, statistical power and sample-size calculation, causal inference, and risk identification within a brokerage product context.

    Analytics & ExperimentationOnsite
  • RobinhoodMediumData Scientist
    Diagnose Decline in First Day Funding Rate

    Diagnose Decline in First Day Funding Rate 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 & ExperimentationTechnical Screen
  • RobloxHardData Scientist
    Compute DID estimate and pretrend flag

    This Analytics & Experimentation question evaluates basic causal-inference and data-manipulation skills by requiring computation of a difference-in-differences (DID) estimate and a binary pretrend flag from panel-like arrays, at an implementation-level focused on summary statistics and edge-case handling.

    Analytics & ExperimentationOnline Assessment
  • RobloxEasyData Scientist
    Compute diff-in-diff and pretrend flag

    This question tests the ability to calculate a difference-in-differences (DiD) estimator for causal inference and implement a basic statistical test for pre-intervention trend divergence.

    Analytics & ExperimentationOnline AssessmentCausal InferenceData WranglingStatistics
  • RobloxHardData Scientist
    Compute minimum sample size for A/B test

    Evaluates the ability to perform sample size and power calculations for a two-sample z-test—including estimating outcome standard deviation from historical continuous data—and is categorized under Analytics & Experimentation for a Data Scientist role at an implementation-level applied statistics abstraction.

    Analytics & ExperimentationOnline Assessment
  • RobloxHardSoftware Engineer
    Define success metrics and monitoring

    Define success metrics and monitoring 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
  • RobloxHardData Scientist
    Design experiment for homepage tab replacement

    This question evaluates experiment design and causal-inference competency for product changes that impact both end users and platform creators, covering randomization strategies, metric and guardrail selection, power calculations, and handling of novelty, navigation friction, and ecosystem interference.

    Analytics & ExperimentationTechnical Screen
  • RobloxMediumData Scientist
    Evaluate Impact of New Roblox Homepage Tab

    Roblox data scientist experimentation prompt on evaluating a new homepage tab, including hypotheses, engagement funnel metrics, guardrails, power, duration, segmentation, cannibalization, and rollout criteria.

    Analytics & ExperimentationTechnical Screen
  • RobloxMediumData Scientist
    Measure Success for a New Chat System

    Build a chat-system launch framework with meaningful communication metrics, reliability and safety guardrails, and experiments that address network effects.

    Analytics & ExperimentationTechnical Screen
  • RokuMediumData Scientist
    Measure Speaker's Impact Using Propensity Score Matching

    Evaluates causal inference for optional smart speaker ownership using propensity score matching and staggered adoption. Strong answers address self-selection, construct matched or weighted controls, validate balance and pre-trends, estimate ATT, and run placebo and sensitivity analyses.

    Analytics & ExperimentationTechnical Screen
  • SamsungMediumData Scientist
    Plan parking demand for a retail store

    This question evaluates demand forecasting, capacity planning, causal inference, and experimental-design competencies within data science, focusing on translating business objectives into measurable metrics such as peak occupancy, overflow rate, lost visits, and return on investment.

    Analytics & ExperimentationHR Screen
  • ShopifyMediumData Scientist
    Analyze Causes of November and June Shopify Traffic Spikes

    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 Analyze Causes of November and June Shopify Traffic Spikes states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.

    Analytics & ExperimentationOnsite
  • ShopifyMediumData Scientist
    Analyze Trends to Optimize Pirate-Theme Product Strategy

    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 Analyze Trends to Optimize Pirate-Theme Product Strategy states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.

    Analytics & ExperimentationTechnical Screen
  • ShopifyHardMachine Learning Engineer
    Collect labels without existing data

    This question evaluates a machine learning engineer's competency in label definition and leakage prevention, instrumentation and logging design, programmatic and human-in-the-loop labeling pipelines, experimental approaches for eliciting outcomes, bias mitigation, and continuous label quality monitoring.

    Analytics & ExperimentationOnsite
  • ShopifyMediumData Scientist
    Diagnose Weekly Session Conversion Anomalies

    This question evaluates proficiency in time-series anomaly detection, conversion-rate analysis, data quality handling (especially parsing and validating week labels), segmentation by shop type and session-duration buckets, and causal reasoning about traffic composition effects.

    Analytics & ExperimentationOnsite
  • ShopifyEasyData Scientist
    Measure App Store success and debug funnel anomaly

    This question evaluates proficiency in product analytics, instrumentation design, experimentation planning, and funnel-level diagnostic analysis for an app marketplace, and falls squarely in the Analytics & Experimentation domain for data scientist roles.

    Analytics & ExperimentationTechnical Screen
  • ShopifyMediumData Scientist
    Measure Shopify App Store Success

    This question evaluates a data scientist's competency in product-metrics design for a multi-sided app marketplace, including defining a north-star metric, per-side success and guardrail metrics, required dataset schemas and join keys, and criteria for evaluating ranking/search/recommendation experiments.

    Analytics & ExperimentationOnsite
  • ShopifyHardData Scientist
    Present Piracy Trends to a PM

    This question evaluates a candidate's ability to interpret time-series analytics and revenue-impact estimates, reason about measurement biases and censoring, and communicate ambiguous statistical findings to product stakeholders.

    Analytics & ExperimentationTechnical Screen
  • SnapchatMediumData Scientist
    Design A/B Tests for Banner Ad and Group-Story Feature

    Evaluates A/B test design for a banner ad and a group-story feature in a social app. Strong answers define monetization, engagement, safety, and retention metrics, handle accidental clicks for ads, account for network effects in group stories, and set launch criteria with guardrails.

    Analytics & ExperimentationOnsite