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
StrataScratch’s Data Project and Mini-Analysis Grader and Evaluator
Every data project and mini-analysis you submit gets read by an AI that scores five dimensions, catches six cardinal sins, and refuses – on principle – to hand you the fix.
Nathan Rosidi -
StrataScratch Mini Analyses: Bite-Sized Real-World Data Analysis Practice
StrataScratch's new question format pairs a small, uncleaned dataset with a real business scenario — testing the judgment calls that separate a working analyst from someone who can just write a query.
Nathan Rosidi -
How to Connect StrataScratch to Claude Using an MCP Connector
Connect your StrataScratch account to Claude with the StrataScratch public MCP connector. Browse interview questions, run code against real datasets, check your solutions, and review your progress, all without leaving your chat window.
Nathan Rosidi -
Using SQL Regex to Classify and Filter Messy Data
Messy ratings, jumbled addresses, and buried keywords: SQL regex filters and classifies all of it inside the query, in seven real interview questions.
Sara Nobrega -
Career
All Career articles
You’re Not Unemployed. You’re Unemployable. (Here’s Why.)
Five reasons your data science job search isn't working, and what to fix before sending another application.
Tihomir Babic -
You Don’t Need to Be a Math Genius for Data Science
Learn the truth about data science interviews and how deep you actually need to go into maths.
Tihomir Babic -
Interviews
All Interviews articles
Using SQL Regex to Classify and Filter Messy Data
Messy ratings, jumbled addresses, and buried keywords: SQL regex filters and classifies all of it inside the query, in seven real interview questions.
Sara Nobrega -
How SQL EXISTS Works and When to Use It
Ignore EXISTS at your own peril! Learn how SQL EXISTS actually works, how it compares to IN and JOIN, and solve actual interview questions.
Tihomir Babic -
Guides
All Guides articlesUsing SQL Regex to Classify and Filter Messy Data
Messy ratings, jumbled addresses, and buried keywords: SQL regex filters and classifies all of it inside the query, in seven real interview questions.
Sara Nobrega -
How SQL EXISTS Works and When to Use It
Ignore EXISTS at your own peril! Learn how SQL EXISTS actually works, how it compares to IN and JOIN, and solve actual interview questions.
Tihomir Babic -
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 -
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 -
Product Updates
All Product Updates articles
StrataScratch’s Data Project and Mini-Analysis Grader and Evaluator
Every data project and mini-analysis you submit gets read by an AI that scores five dimensions, catches six cardinal sins, and refuses – on principle – to hand you the fix.
Nathan Rosidi -
StrataScratch Mini Analyses: Bite-Sized Real-World Data Analysis Practice
StrataScratch's new question format pairs a small, uncleaned dataset with a real business scenario — testing the judgment calls that separate a working analyst from someone who can just write a query.
Nathan Rosidi -