Twitter

Histogram of Tweets

LinkedIn

Data Science Skills

Facebook

Page With No Likes

Tesla

Unfinished Parts

NY Times

Laptop vs. Mobile Viewership

Coin Fairness Test

BCG Gamma

Precision/Recall Tradeoff

Average Post Hiatus (Part 1)

Microsoft

Teams Power Users

JPMorgan

Two Consecutive Sixes

Visa

4 Rolls To 4

Factorial Formula

Google

Fizz Buzz Sum

Palantir

Roman to Integer

Amazon

Intersection of Two Lists

Missing Integer

Bloomberg

Collatz Sequence Steps

Duplicate Job Listings

Robinhood

Cities With Completed Trades

Apple

Contains Duplicate

Salary Inequity

Max Profit Trading Stocks

Straight Line

Capital One

Base 13 Conversion

Average Review Ratings

FAANG

Well Paid Employees

PayPal

Final Account Balance

Uber

Pascals Triangle

Pascals Triangle (Part 2)

Intuit

QuickBooks vs TurboTax

App Click-through Rate (CTR)

TikTok

Second Day Confirmation

Spotify

Is Palindrome

Hundreds of Hypotheses

Probability of 7-Game Series

IBM db2 Product Analytics

Many Metropolitan Areas

Cards Issued Difference

Alibaba

Compressed Mean

CVS Health

Pharmacy Analytics (Part 1)

Pharmacy Analytics (Part 2)

Pharmacy Analytics (Part 3)

McKinsey

Assumptions of Linear Regression

Bootstrapping 101

Oracle

Arithmetic Triplets

UnitedHealth

Patient Support Analysis (Part 1)

Netflix

Lazy Movie Raters

User's Third Transaction

Second Highest Salary

Snapchat

Sending vs. Opening Snaps

Tweets' Rolling Averages

Akuna Capital

Consecutive Fives

Highest-Grossing Items

Top Three Salaries

Top 5 Artists

Sample Margin of Error

Signup Activation Rate

Accenture

Fill Missing Client Data

Spotify Streaming History

Mean, Median, Mode

Pharmacy Analytics (Part 4)

Stripe

Maximum Sum of a Matrix

Integer to Roman

Walmart

Frequently Purchased Pairs

Bias-Variance Tradeoff

Supercloud Customer

Blackstone

Real Estate Modelling

Factorial Trailing Zeroes

D.E. Shaw

Maximum Product of Three Numbers

Two Sum

Largest Prime Factor

Smallest Multiple

Pearson Correlation Coefficient

Merge Conflicts

Largest Contiguous Subarray Sum

Biased Coin?

Odd and Even Measurements

Zomato

Swapped Food Delivery

FAANG Stock Min-Max (Part 1)

Airbnb

Booking Referral Source

Uniform Distribution Median

User Shopping Sprees

Fraud Detection Metrics

2nd Ride Delay

Histogram of Users and Purchases

Mu Sigma

Correlation Calculation

Google Maps Flagged UGC

Compressed Mode

Card Launch Success

Verizon

International Call Percentage

Patient Support Analysis (Part 2)

Connection Request Spam

Active User Retention

Wayfair

Y-on-Y Growth Rate

Maximize Prime Item Inventory

Median Google Search Frequency

Advertiser Status

Consecutive Filing Years

Snowflake

Marketing Touch Streak

3-Topping Pizzas

Company	Title	Category	Difficulty
BCG Gamma	Precision/Recall Tradeoff	Machine Learning	Easy
McKinsey	Assumptions of Linear Regression	Machine Learning	Easy
Blackstone	Real Estate Modelling	Machine Learning	Medium
LinkedIn	Connection Request Spam	Machine Learning	Medium
Robinhood	Modeling User Churn	Machine Learning	Hard

SQL & Data Interview Questions

Career Resources

Support

Interview Questions