Our members get amazing jobs at the top tech companies
Practice real data science interview questions
Develop your skills and prepare for your interview using over 500+ real questions from the biggest data companies in data science.
Decreasing Comments
Let’s say you work for a social media company that has just done a launch in a new city. Looking at weekly metrics, you see a slow decrease in the average number of comments per user from January to March in this city.
The company has been consistently growing new users in the city from January to March.
What are some reasons why the average number of comments per user would be decreasing and what metrics would you look into?
Stop wasting time trying to figuring out what to study
Get an inside look into data science companies and roles. Interview Query curates your job search so you know exactly what to expect before the interview and after you get the job.
Company Guides
In-depth research into the interview process at over 1,600+ top tech companies
Salary Comparison
See how your offer compares to your peers and segment data by company, location, position and seniority.
Interview Experiences
Discover first hand insights and experiences directly from past interviewees
Data Science Job Board
Curated list of the best data science jobs available complete with guides to help you ace the interview.
Challenge Quizzes
Take one of our challenge quizzes and get your performance score to understand your skill level relative to your peers.
We sort the interview questions into relevant topics so you can focus on getting the job
Product Intuition
Understanding how to solve problems before pulling data and how to showcase analytical knowledge to empower business decisions.
Algorithms
These questions test how to write complex implementations of data structures and algorithms for machine learning and engineering focused roles.
SQL & Analysis
Tests data analytics, ability to pull your own data for building models, and different interpretation of datasets and metrics.
Python Scripting
Test basic skills within coding in Python such as text parsing, reading files for writing scripts or building features out of datasets in Pandas.
Statistics & A/B Testing
Needed to understand the basics of statistics, experiment design, and how to effectively measure and implement A/B tests.
Machine Learning & System Design
Understanding of how to build, deploy, and test machine learning models in production as well as how to architecting database design for scale.
Modeling
A focus on testing the interpretation and validation of model building, model case studies, and showcasing an understanding of tradeoffs between technical and business decisions.
Probability
Based on understanding the principles behind many algorithms and models.
Get support and guidance on your data science journey
Nobody has to go it alone. Be part of a community of data scientists of all levels, where you can ask questions, get advice, and find coaching to help you on your career journey.
We've helped 1,000+ premium members get placed at top tech companies, such as Meta
Question Bank
Access 500+ interview questions with solutions we have in our database, including real take-home exercises companies use in interviews.
Interview IDE
Work on practice questions directly from our in-browser code editor.
Adaptive Content
Get customized practice recommendations and study guides for your goals based on responses to our challenge questions
Rich Coursework
Full access to over 30 hours of course content that specifically geared towards reviewing what you need to know to ace your technical interviews.
