Data Science Educational Resources
StrataScratch is a data science educational platform with over 1,000+ real interview questions from your favorite companies.
Guides
Joining Multiple Tables in SQL - Examples and Walkthrough
We’ll show you how to use JOINs to join multiple tables in SQL and how choosing a specific type of JOIN can change the outcome of the query.
Irakli Tchigladze -
Top 18 Python Libraries A Data Scientist Should Know in 2023
Maximize your data science potential with the top 18 python libraries every data scientist should know in 2023, from NumPy to PyTorch and with subsections.
Nathan Rosidi -
Machine Learning Algorithms Explained: Support Vector Machine
Brace yourself for a detailed explanation of the Support Vector Machine. You’ll learn everything you wanted and what you didn’t but really should know.Nathan Rosidi -
Types of Pandas Joins and How to use them in Python
Here are different types of pandas joins and how to use them in Python. Inner, Outer, Right, and Left joins are explained with examples from Amazon and Meta.Nathan Rosidi -
30 Product Analyst Interview Questions
Lacking confidence for the product analyst interviews? 30 questions, 7 topic categories, numerous interview tips, and practice opportunities will fix that.
Tihomir Babic -
The Essential 3 Data Science Projects to Land Your Dream Job
Here are 3 projects that will help land a data science job. These projects improve all five fundamental skills you’ll have to showcase in an interview.Nathan Rosidi -
Amazon SQL Interview Questions
Amazon SQL Interview Questions: The Real Patterns, Traps, and Query Skills Amazon Actually Tests.
Sara Nobrega -
Digging Deeper Into SQL Temp Tables
This article helps you unlock the power of SQL temporary or temp tables. Improve your query efficiency, data analysis, and data transformation with them.Nathan Rosidi -
Mastering the SQL Subqueries With Multiple Tables
Mastering the tools to use subqueries involving multiple tablesNathan Rosidi -
Why SQL is THE Language to Learn for Data Science
Outdated, non-cool, and basic – is that what you think of it? SQL is none of that! Here’s why you can’t avoid it in data science, and it’s here to stay.Nathan Rosidi -
Mastering SQL DENSE_RANK(): A Comprehensive Guide
How do you use SQL DENSE_RANK() to rank data in SQL? This guide will help you become a master in SQL ranking window functions.Nathan Rosidi -
Breakdown of the Data Analyst Salary and Job Market
Who are data analysts and how high is their salary? What skills do you need to become one? You'll find the answers to these questions in this article.Nathan Rosidi -