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
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Best Practices for R Continuous Integration
Implementing Continuous Integration in R: Automate Tests, Detect Errors Early, and Keep Your Analysis Consistent
Nathan Rosidi - October 7, 2025
How to Remove an Element from a List in Python
Different Ways to Remove Items from Python Lists with Practical Examples
Nathan Rosidi - October 3, 2025
PCA Analysis in Python for Beginners
A Practical Walkthrough of Principal Component Analysis with Real-World Examples in Python
Nathan Rosidi - September 23, 2025
Exploring NumPy where() in Python for Conditional Operations
Master NumPy where() for smarter data filtering, conditional replacements, and interview-ready logic with clean, efficient Python code.
Nathan Rosidi - September 17, 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 Remove an Element from a List in Python
Different Ways to Remove Items from Python Lists with Practical Examples
Nathan Rosidi - October 3, 2025
PCA Analysis in Python for Beginners
A Practical Walkthrough of Principal Component Analysis with Real-World Examples in Python
Nathan Rosidi - September 23, 2025
Exploring NumPy where() in Python for Conditional Operations
Nathan Rosidi - September 17, 2025
Case Statement in Python: Best Practices and Alternatives
Nathan Rosidi - August 26, 2025
Guides
All Guides articlesBest Practices for R Continuous Integration
Implementing Continuous Integration in R: Automate Tests, Detect Errors Early, and Keep Your Analysis Consistent
Nathan Rosidi - October 7, 2025
How to Remove an Element from a List in Python
Different Ways to Remove Items from Python Lists with Practical Examples
Nathan Rosidi - October 3, 2025
Exploring NumPy where() in Python for Conditional Operations
Nathan Rosidi - September 17, 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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