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."
Diagnosing a drop in total ads revenue
Diagnosing a Sharp Drop in Global Ads Revenue You are a data scientist supporting a large ads marketplace. Last week, global ads revenue declined shar...
Diagnose Causes and Test Hypotheses for Metric Drop
Diagnosing and Testing a Sudden Metric Drop A large consumer web or mobile product sees its key business metric drop materially and suddenly. Assume s...
Calculate Profitability with Different Pricing Schemes
Unit Economics and Break-even Analysis You are evaluating a subscription product's monthly unit economics. Unless otherwise noted, fixed cost is $400 ...
Analyze and mitigate fake advertiser accounts
Your ads platform suspects there are fake advertiser accounts (fraudulent accounts created to scam users, evade policy, or manipulate spend). You are ...
Diagnose why average waiting time increased
Diagnose Why Average Waiting Time Increased You are a Data Scientist supporting DoorDash logistics. Over the last 1 to 2 weeks, the business metric av...
Diagnose a dip in approval/conversion rate
You are a Staff Data Scientist analyzing a time series metric for a payments/fintech product. Data: Daily (or weekly) time series from Jan 2013 to Jan...
How would you test swapping two CTA buttons?
You work on the Airwallex marketing/product landing page. There are two primary CTA buttons: - “See a demo” - “Get started” A proposal suggests swappi...
Measure impact of bot mitigation via experiment
Experiment Design: Measuring the Impact of a Bot‑Mitigation System Context You are evaluating a production change to a large social platform that hide...
Measure a friend-recommendation launch
A new friend-recommendation algorithm ships behind a feature flag. Design how you will measure success and decide whether to launch: - State no more t...
Optimize amusement park pricing, capacity, and testing
Context You are interviewing for a Data Scientist role focused on analytics and experimentation. An amusement park is considering launching a paid Fas...
Design pricing and multivariate button experiments
You join a B2B SaaS firm with three public tiers (Basic $25/month, Pro $50/month, Enterprise = sales-quoted). The PM asks for a 2‑week A/B test to rai...
Design metrics and an A/B test for an app
Pick a consumer digital app you love. Assume the interviewer knows nothing about it. 1) Explain the product, core jobs-to-be-done, target audience seg...
Reduce variance with covariate adjustment
Experiment Design and CUPED/Regression Adjustment You are running a randomized A/B test with outcome Y. You also have a pre-period covariate X (measur...
Detect and address Simpson’s paradox
Experiment Aggregation Bias and Heterogeneity: Simpson's Paradox, Robust Estimation, and Decisioning Context You ran a randomized experiment measuring...
Design and analyze A/B test with interference
You must ship a News Feed ranking change where content produced by treated users can be seen by control users, creating interference and within-user c...
Design and analyze a banner A/B test
A/B Test Design: Home-Page Banner You are deciding whether to add a home-page banner in a consumer app. Design and analyze the A/B test end-to-end. As...
Design and analyze pricing-page A/B test
AB Test Plan: New Pricing-Page Layout Context: You will run a 2-arm online experiment on a pricing page. The primary metric is user-level paid convers...
Identify and mitigate risks to break-even
Break-even Risk Assessment for the RH Partnership Offer Context You are evaluating a break-even (BE) analysis for a partnership offer with RH (e.g., a...
Design an A/B launch amid marketing confounds
You’re running a virtual launch (soft roll-out) of a new fitness tracker product to US+CA users from 2025-08-10 to 2025-08-24 with a 50/50 user-level ...
Evaluate Facebook Dating launch and validate success
Validation Plan: Scaling Facebook Dating from Pilot to Broader Rollout Context: You are a data scientist evaluating whether a limited-market pilot of ...