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."
Design Experiments Under Network Interference
You are a Senior Data Scientist for a gaming platform such as PlayStation. Answer the following experimentation questions. 1. A/A test validation: The...
Diagnose Flight Delays and Burger Launch
You are given two analytics case questions. Part A: Flight delay analysis An airline wants to understand and predict delays. You receive a flight-leve...
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...
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...
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...
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). ...
Interpret a Streaming Regression Without Overstating Causality
You are given an ordinary least squares regression intended to explain a user's streaming hours over the last 28 days: streaming_hours_l28d = beta_0 +...
How would you measure impact?
A payments company launches a new fraud-screening feature that adds an extra risk check before approving certain transactions. Leadership wants to kno...
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...
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...
Diagnose the Leading Cause of Slow or Failed Charging
Prompt You support reliability analytics for a fleet of battery-powered robots. Operators report that some charging sessions fail and others charge mo...
Choose a Metric Hierarchy for a Humanoid-Robot Fleet
Prompt You are designing the measurement system for a humanoid-robot fleet that performs varied tasks in real operating environments. Product, reliabi...
How would you measure billboard impact?
Pinterest is considering launching a new billboard, a large and prominent promotional module shown near the top of the home feed or another major surf...
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...
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...
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 ...
Design and Monitor a Multi-Country Parameter Experiment
You are planning streaming-product experiments and are asked to address four related design questions. Treat them as separate parts unless you explici...
How would you test billboard effectiveness?
Pinterest is considering an offline billboard advertising campaign in selected cities to increase brand awareness and downstream user growth. As the d...
Explain why IG Story usage exceeds Facebook
Explain why IG Story usage exceeds Facebook Product analytics case: Instagram vs Facebook Stories You work on Stories across two apps: Instagram (IG) ...
Measure feature impact with switchback, PSM, and CACE
You work at a ridesharing company and want to measure the impact of a new membership feature on rides-per-user (RPU). Across the parts below you will ...