Data Scientist Analytics & Experimentation Interview Questions
Practice 863 real Analytics & Experimentation interview questions for Data Scientist roles. From companies including Meta, Capital One, DoorDash, Uber, TikTok.
"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"
"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"
"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."
"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."
"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."
"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."
"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."
"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."
"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."
"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."
"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."
"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."
"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."
"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."
Decide best email variant using stratified A/B analysis
Stratified A/B Test Across Two Strata (Week/Location) You ran an email A/B test across two strata defined by week/location. Each user receives at most...
Evaluate shopping tab pre- and post-launch
Instagram Shopping Tab — Measuring Off‑App Purchases, Opportunity Sizing, and Launch Readout Context Instagram is planning a new Shopping tab. Users o...
Translate goals into robust product metrics
Analytics & Experimentation: Metric Design and Validation Context You are a Data Scientist working on analytics and experimentation. You are given bus...
Diagnose and reduce cold-food refund costs
Case: Reducing Cost of Cold-Food Refunds While Preserving Trust Context DoorDash currently issues 100% refunds for all "cold-food" complaints, which d...
Analyze A/B test with rigorous diagnostics
A/B Test Analysis Live Walkthrough (Python) Context You are given a user-level randomized experiment dataset experiment.csv with columns: - user_id - ...
Design A/B test for credit card offer
A/B Test Design: New Credit-Card Acquisition Flow (Revised APR Disclosure + Signup Bonus) Context You are launching a new credit-card acquisition flow...
How investigate a brand-ad spend drop?
Meta has a video ads product with two ad types: - Direct ads: optimized for in-platform actions - Brand ads: users click the video ad and are sent to ...
Diagnose drop in shopper order acceptance
Question Marketplace diagnosis case. A grocery-delivery marketplace (Instacart-style) observes that on Sunday afternoon, the number of orders that sho...
Evaluate account re-ranking via logs and A/B test
A product has users with multiple accounts. In the UI, these accounts are shown as a list. - Current ranking: accounts are sorted by most recent visit...
Compute p-values for 2 variants vs control
A/B/n test: compute p-values and make a ship decision You ran an online A/B/n experiment with 1 control and 2 treatment variants (A/B/C). You are give...
How would you compare Facebook vs Instagram Stories?
You work on short-form ephemeral content. Both Facebook Stories and Instagram Stories exist, and leadership asks: Which product should we invest in, a...
How to evaluate lowering ETA?
Uber wants to estimate the business value of reducing ETA, where ETA is the predicted time from when a rider requests a trip until the driver arrives ...
Investigate Conversion Drop: Metrics, Analyses, Techniques Explained
Investigating a Conversion Drop After a Feature Release Context A new feature was released on an e-commerce platform. Shortly after, overall checkout ...
Calculate Payback Period for Solar and Corn Projects
Renewable Projects: Payback Period Comparison Context You are comparing two energy projects using a simple payback metric (years until cumulative prof...
Identify Major Components of DoorDash's Operational Costs
Operational Cost Structure and Data-Driven Optimization (Food Delivery Marketplace) Scenario Leadership wants to understand the end-to-end operational...
Determine Optimal Budget Allocation for Maximum Profit
Scenario You have three user-acquisition platforms: Live Phone Calls, Social Media Ads, and Email Campaigns. You are given a total marketing budget B....
Identify Growth Opportunities for New Payroll Feature Launch
Case Study: Driving Adoption of a New Automated Tax‑Filing Feature Scenario You are a data scientist partnering with a product manager on a payroll pr...
Evaluate Impact of $1 Fee on Fast-Food Profitability
Experiment Design: $1 Delivery-Fee Surcharge on Unprofitable Restaurants Scenario About 10% of fast-food restaurants on the platform are unprofitable....
Analyze Trends to Optimize Pirate-Theme Product Strategy
Scenario You have explored and summarized the performance of the "Pirate" theme for the Shopify product and leadership teams. The product manager now ...
How would you analyze and test a price increase?
Case Study (Product / Data Science) You work on a subscription-based AI video editing/creation product and leadership is considering raising prices (e...