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Data Science Interview Questions

Practice the most common SQL, Statistics, and ML questions which show up in FAANG Data Science & Data Analyst interviews!

CompanyTitleCategoryDifficultyStatus

LinkedIn

Data Science Skills

SQLEasy

Facebook

Page With No Likes

SQLEasy

Tesla

Unfinished Parts

SQLEasy

New York Times

Laptop vs. Mobile Viewership

SQLEasy

Facebook

Coin Fairness Test

StatisticsEasy

Linkedin

Duplicate Job Listings

SQLEasy

BCG Gamma

Precision/Recall Tradeoff

Machine LearningEasy

Facebook

Average Post Hiatus (Part 1)

SQLEasy

Microsoft

Teams Power Users

SQLEasy

Visa

4 Rolls To 4

StatisticsEasy

Robinhood

Cities With Completed Trades

SQLEasy

Amazon

Average Review Ratings

SQLEasy

Facebook

App Click-through Rate (CTR)

SQLEasy

TikTok

Second Day Confirmation

SQLEasy

JPMorgan Chase

Cards Issued Difference

SQLEasy

Alibaba

Compressed Mean

SQLEasy

CVS Health

Pharmacy Analytics (Part 1)

SQLEasy

CVS Health

Pharmacy Analytics (Part 2)

SQLEasy

CVS Health

Pharmacy Analytics (Part 3)

SQLEasy

McKinsey

Assumptions of Linear Regression

Machine LearningEasy

UnitedHealth

Patient Support Analysis (Part 1)

SQLEasy

Netflix

Lazy Movie Raters

ProbabilityMedium

UnitedHealth

Patient Support Analysis (Part 2)

SQLEasy

Uber

User's Third Transaction

SQLMedium

Snapchat

Sending vs. Opening Snaps

SQLMedium

Twitter

Tweets' Rolling Averages

SQLMedium

Akuna Capital

Consecutive Fives

StatisticsMedium

Amazon

Highest-Grossing Items

SQLMedium

Spotify

Top 5 Artists

SQLMedium

TikTok

Signup Activation Rate

SQLMedium

Accenture

Fill Missing Client Data

SQLMedium

Walmart

Frequently Purchased Pairs

SQLMedium

Microsoft

Supercloud Customer

SQLMedium

Blackstone

Real Estate Modelling

Machine LearningMedium

D.E. Shaw

Biased Coin?

StatisticsMedium

Google

Odd and Even Measurements

SQLMedium

Walmart

Histogram of Users and Purchases

SQLMedium

Alibaba

Compressed Mode

SQLMedium

JPMorgan Chase

Card Launch Success

SQLMedium

Verizon

International Call Percentage

SQLMedium

LinkedIn

Connection Request Spam

Machine LearningMedium

Facebook

Active User Retention

SQLHard

Wayfair

Y-on-Y Growth Rate

SQLHard

Amazon

Maximize Prime Item Inventory

SQLHard

Google

Median Google Search Frequency

SQLHard

Facebook

Advertiser Status

SQLHard

McKinsey

3-Topping Pizzas

SQLHard

Facebook

Product vs. Square

StatisticsHard

Robinhood

Modeling User Churn

Machine LearningHard

UnitedHealth

Patient Support Analysis (Part 3)

SQLHard

UnitedHealth

Patient Support Analysis (Part 4)

SQLHard

Stripe

Repeated Payments

SQLHard

Google

Minimum of Two Uniform Variables

StatisticsHard

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Refer Friends To Unlock More Questions

Tags

Calculate Rates7

Array Functions2

Minimum/Maximum4

Date-Time Operations13

Mathematical Functions3

Aggregations24

Ace the Data Science Interview15

Type Conversion12

Categorize Data15

Window Functions12

Top X5

Existence Check5

Cumulative Sums0

SQL Series1

Conditional Aggregation8

String Functions2

Unique Results8

User Behavior5