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."
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...
Evaluating and launching Instagram Stories
Evaluating and Launching Instagram Stories You are evaluating the rollout and impact of Stories, an ephemeral sharing format similar to Snapchat, acro...
Investigate Instacart Revenue Decline Using Weekly Data
Investigate an Instacart Weekly Revenue Decline Instacart's weekly revenue fell 4% versus the prior week. Initially, you only have the historical week...
Diagnose Search Issues with Relevant Metrics and Solutions
Brand-Name Search: Diagnosing Relevance and Safety Issues Brand clients report that when users search for their own brand name, the platform surfaces ...
Analyze Transactions for Risk and Implement Mitigation Strategies
Analyze Transactions for Risk and Implement Mitigation Strategies Real-Time Payments Risk: Accept or Decline, With Immediate Mitigations Scenario Two ...
Analyze Trends to Optimize Pirate-Theme Product Strategy
Analyze Trends to Optimize Pirate-Theme Product Strategy Scenario You have explored and summarized the performance of the "Pirate" theme for the Shopi...
Identify Growth Opportunities for New Payroll Feature Launch
Identify Growth Opportunities for New Payroll Feature Launch Case Study: Driving Adoption of a New Automated Tax‑Filing Feature Scenario You are a dat...
Investigate Sudden Metric Changes and Design A/B Test
Investigate Sudden Metric Changes and Design A/B Test Scenario A core business metric (e.g., conversion, cancellations, or gross bookings) shows a sud...
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...
Investigate cross-country engagement and ads experiments
You are a Data Scientist in an Ads organization. Part A — Engagement differs across two countries You observe that engagement is meaningfully differen...
Design an A/B test for a new shop-ads algorithm
A new ranking/promotion algorithm will change which shop ads are shown (and their order). You are asked: “How do we know if this new algo is good?” De...
Analyze your favorite app and improve it
Pick your favorite consumer app. a) Explain its monetization model and top two competitors with key differentiators. b) As CEO, define three north-sta...
Diagnose 10–11% usage drop across geos
US usage is down 10% and Mexico is down 11%. List plausible confounders (seasonality, pricing, outages, marketing mix, competitor moves, feature rollo...
Prioritize a new warehouse proposal with data
Build vs. Lease vs. Defer: New Fulfillment Center Decision Context You are evaluating whether to open a new fulfillment center (FC) to improve deliver...
Estimate shuttle impact with robust causal design
You have individual-level data from 1,000+ sites, several hundred of which adopt a free employee shuttle at different times. Design a causal analysis ...
Evaluate Miami Ultrafast impact on orders
Instacart launched an Ultrafast delivery feature in Miami two months ago. You have weekly orders per geo for the past 52 weeks; Miami is treated from ...
Determine if players prefer local creators without experiments
You cannot run an A/B test. Define “local creators” as creators whose games use a player’s native language. Design an observational study to estimate ...
Build a causal ML pipeline end-to-end
Policy Targeting from Causal Inference to Production Context You completed a causal-inference project estimating the effect of a binary marketing trea...
Diagnose Sunday Miami same‑day outages
Marketplace stability case: same‑day disablement on Sunday afternoons (Miami) Context Instacart offers two fulfillment modes: - Same‑day delivery (rea...