Data Science Educational Resources
StrataScratch is a data science educational platform with over 1,000+ real interview questions from your favorite companies.
Latest Blog Posts
All articles
How to Conduct a T-Test in R for Data Analysis
Learn to run t-tests in R: check assumptions, interpret statistical results, and apply insights effectively to real-world data analysis projects.
Nathan Rosidi - November 20, 2025
How to Create Pivots in SQL (with examples)
Reshaping data using Pivots is table-stakes in data science. Learn about its importance, techniques, and implementation.
Shivani Arun - November 14, 2025
Creating a Python Linked List Step by Step
Build a stack using a Python linked list, understand the logic, memory flow, and interview-ready reasoning behind it.
Nathan Rosidi - November 7, 2025
How Does Python For Loop Range Function Work?
Learn how to use Python’s for loops and range() together to automate repetitive tasks, clean data, and tackle real-world coding problems.
Nathan Rosidi - November 5, 2025
Career
All Career articles
The Biggest Lie in Data Science: 'You Need to Build an App'
Most data scientists don’t need to build web apps. But if you must, this no-BS guide breaks down which frameworks actually make sense (and which don't).
Nathan Rosidi - July 16, 2025
How We Oversaturated the Data Science Job Market
You thought you’d develop ML models and earn serious money. Instead, you’re still looking for a data science job four years later. We’ll look at why it’s like that and what you can do.
Nathan Rosidi - May 27, 2025
Why Your ML Job Feels Like a Lie (And What To Do About It)
Nathan Rosidi - May 2, 2025
Interviews
All Interviews articlesHow to Conduct a T-Test in R for Data Analysis
Learn to run t-tests in R: check assumptions, interpret statistical results, and apply insights effectively to real-world data analysis projects.
Nathan Rosidi - November 20, 2025
How to Create Pivots in SQL (with examples)
Reshaping data using Pivots is table-stakes in data science. Learn about its importance, techniques, and implementation.
Shivani Arun - November 14, 2025
Guides
All Guides articlesHow to Conduct a T-Test in R for Data Analysis
Learn to run t-tests in R: check assumptions, interpret statistical results, and apply insights effectively to real-world data analysis projects.
Nathan Rosidi - November 20, 2025
How to Create Pivots in SQL (with examples)
Reshaping data using Pivots is table-stakes in data science. Learn about its importance, techniques, and implementation.
Shivani Arun - November 14, 2025
Data Science Therapy: I Automated My Job… Excel Ruined Everything!
Nathan Rosidi - October 20, 2025
Companies
All Companies articles
What Does It Take to Be a Data Engineer at Google
Journeying through Skills, Perks, and Application Insights for Aspiring Google Data Engineers
Nathan Rosidi - May 23, 2024
Microsoft SQL Interview Questions
We'll discuss one of the interesting Microsoft SQL interview questions to help prepare you for applying for a role as a Microsoft data scientist.
Nathan Rosidi - October 30, 2023
LinkedIn Data Scientist Interview Questions
Nathan Rosidi - October 30, 2023
40+ Data Science Interview Questions From Top Companies
Nathan Rosidi - October 30, 2023
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