Senior+ Analytics & Experimentation Interview Questions
Practice the exact questions companies are asking right now.
"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."
Diagnose a One-Day Drop in Successful Deliveries
Prompt On one specific day, the number of successful deliveries in a large metropolitan market drops sharply. The alert is about the count, not the su...
Estimate a Launch Impact with Difference in Differences
A feature launches in a set of treated regions while comparable control regions do not receive it. You observe an outcome before and after launch and ...
Evaluate a Product Change That Adds More User Options
A product team wants to add more options to an existing user flow. Design an experiment to determine whether the change improves the product, and expl...
Analyze an AI Product Pilot and Recommend Whether to Expand It
An AI product has been tested with a limited group of pilot users. The product team asks whether it should expand access. Describe how you would analy...
Estimate Incremental Search-Ad Revenue Without an A/B Test
Estimate Incremental Search-Ad Revenue Without an A/B Test A search product assigns 100 users, selected at random from a clearly defined eligible popu...
Size an Opportunity and Present It with Clear Visuals
You receive a slide deck describing an ambiguous business opportunity and are asked to walk through market or product sizing and choose visualizations...
Interpret a Streaming Regression Without Overstating Causality
Learn to explain regression coefficients and confidence intervals to a product partner without turning association into causation. Examine confounding...
Choose a Metric Hierarchy for a Humanoid-Robot Fleet
Create a metric hierarchy for a humanoid-robot fleet spanning useful task completion, autonomy, reliability, safety, charging, operations, and data he...
Diagnose the Leading Cause of Slow or Failed Charging
Analyze a robot-charging reliability case by defining failure and exposure, ranking root causes, and investigating slow sessions with imperfect teleme...
Design and Monitor a Multi-Country Parameter Experiment
Prepare for experimentation questions spanning sample size, duration, variance reduction, multi-arm parameter tuning, sequential monitoring, and cross...
Evaluate Last-Mile Product Metric Changes
You are a Principal Data Analyst supporting Walmart Last Mile delivery products. The customer journey includes browsing or cart entry, selecting deliv...
Evaluate Fresh Content and Video Experiments
Pinterest wants to improve the perceived freshness and engagement of the home feed. Answer the following interview questions: 1. Define a practical me...
Design and analyze a free-trial A/B test
A/B Test Design: 1‑Month Free Trial Impact on Paid Subscription Conversion You are evaluating whether offering a 1‑month free trial increases paid sub...
Diagnose Flight Delays and Burger Launch
This question evaluates a data scientist's skills in data auditing and cleaning, feature engineering and modeling decisions (regression versus classif...
Estimate impact without experiments and pick variant
Part A — Measuring impact when you cannot run an experiment You are a Staff Data Scientist working on a product change (feature/policy/model update). ...
How would you use propensity score matching here
You want to estimate the causal effect of a new recommender feature on 7-day retention. The feature was not randomized: users “opt in” after seeing a ...
Investigate marketplace metrics and experiment rollout
You are interviewing for a Senior Data Scientist role at a two-sided marketplace like Instacart, where customers place delivery orders and shoppers ch...
Design a Maps Address Search Bar
Design the search experience for a map application's address bar, similar to the search box in Google Maps. The system should handle multiple user int...
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 do you diagnose a ratio metric change
In an A/B test, the treatment group shows a statistically significant increase in a ratio metric: - CTR = clicks / impressions increased by +1.2% rela...