Analytics & Experimentation Interview Questions
Practice 909 real Analytics & Experimentation interview questions for 2026 — Analytics & Experimentation interview questions drawn from companies like Meta, Capital One, DoorDash, TikTok, and Uber. Real questions from actual data interviews with detailed solutions, this collection targets the way modern product teams test ideas: A/B and multivariate experiments, causal identification, metric specification, power and sample-size reasoning, and the downstream analysis and instrumentation needed to trust results. Use this for focused interview preparation whether you’re applying for product/data scientist, analytics engineer, or experimentation platform roles. Expect case-style experiment designs, metric-definition prompts, diagnostic “why did the experiment fail” questions, and hands-on analysis tasks in SQL or Python. Interviewers evaluate statistical rigor (peeking, multiple comparisons, false discovery), product judgment (success metric choice, guardrail trade-offs), and practical engineering concerns (backfill, delayed metrics, segmentation, treatment assignment). To prepare, practice end-to-end experiment writeups, rehearse power calculations and sequential-analysis thinking, sharpen SQL/Python analysis, and build concise tradeoff narratives that show both causal reasoning and business impact.

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Test whether US uploads more videos
You want to evaluate the hypothesis: > “US members upload more videos than non‑US members.” You have: Table: video_posts | column | type | |---|---| |...
Evaluate New Feed-Ranking Algorithm with A/B Testing
A/B Test a New Feed-Ranking Algorithm A social-media company wants to evaluate a new feed-ranking algorithm intended to increase daily active minutes ...
Estimate ATE, ITT, and TOT from experiment
You are given a single dataset (CSV) from an A/B experiment on a streaming product. The goal is to estimate the causal effect of a personalization fea...
Identify Key Drivers of Delivery Decline in Los Angeles
Identify Key Drivers of Delivery Decline in Los Angeles Scenario DoorDash sees a 10% drop in the number of completed deliveries in Los Angeles week-ov...
Design A/B Test for Search Feature Effectiveness
Design A/B Test for Search Feature Effectiveness A/B Testing a Search Button and Measuring Search Quality Scenario A product team wants to evaluate a ...
Should the mulch promotion continue?
A home-improvement retailer is running a seasonal promotion on bagged mulch. Business context - Regular price: $3.50 per bag - Promo price: $2.00 per ...
Analyze ad watch-time with Excel pivots
You are given a flat file with these columns: Date (Excel date, no time zone), UserID, AdID, WatchSeconds (integer ≥ 0), Clicks (integer ≥ 0). Using o...
Compute duration and stopping rules correctly
Experiment Runtime Planning: Same‑Day Delivery Attach Rate You are planning an A/B test on the same‑day delivery attach rate (the proportion of eligib...
Design a causal evaluation without A/B testing
Non-Randomized Launch Decision via Synthetic Control: Complete Analysis Plan You need to make a go/no-go decision for a high-impact feature that canno...
Design analysis to reduce cold-delivery complaints
Cold-Food Complaints: End-to-End Analysis and Action Plan You are the data scientist at a food-delivery marketplace that is seeing an increase in "col...
Design A/B test for AI chat box
Context A social platform (e.g., Reddit) plans to launch an AI chat box that answers user questions. The functionality overlaps with the existing Sear...
Calculate Profitability and Evaluate Partnership for Credit Card Portfolio
Calculate Profitability and Evaluate a Partnership for a Credit Card Portfolio You are analyzing a mature credit-card portfolio to assess current prof...
Diagnose Cold Food Deliveries with Key Metrics Analysis
Diagnose Cold Food Deliveries and Test a Fix A food-delivery platform is receiving a spike in customer complaints that delivered meals arrive cold. Yo...
Determine Success Metrics for Biker Dasher Program Launch
Determine Success Metrics for Biker Dasher Program Launch Scenario DoorDash is considering a 'Biker Dasher' program to let couriers use bicycles (and ...
Diagnose rising cold-food complaints and choose metrics
Case: Customers complain food arrives cold You are a Data Scientist (Analytics-focused) at a food delivery marketplace (e.g., DoorDash). Over the last...
Evaluate shift from branch to digital channel
Business case: OneMain credit card — branch vs. digital acquisition OneMain runs a credit-card business with two acquisition/servicing flows: - Tradit...
Define engagement metrics and analyze comment distribution
You are a Data Scientist for a video platform. A PM asks you to: 1) Define metrics for “engagement” (they want a clear metric framework they can use i...
Evaluate Stripe Capital Loan Performance
You are a Data Analyst on the go-to-market analytics team for a payment platform similar to Stripe. The company offers working-capital loans to mercha...
Design an Uber feature and analyze safety
You are interviewing for a Data Scientist summer internship at a ride-sharing marketplace. Part A: Product case Uber wants ideas for a new rider-facin...
Calculate Profit-Maximizing Price and Validate with Additional Data
Profit-Maximizing Price with Costs and a Demand Curve You sell a single software product at one price P. You are given fixed cost F, variable cost as ...