Data Science Educational Resources
StrataScratch is a data science educational platform with over 1,000+ real interview questions from your favorite companies.
Interviews
Computing Cumulative Sum in SQL Made Easy
Showing you what the cumulative sum is and how to calculate it in SQL. We’ll go through three distinct methods, so you can use whichever method you like best.
Nathan Rosidi -
Top 30 Python Interview Questions and Answers
A comprehensive overview of the types of Python interview questions asked in Data Science Interviews at top companies like Amazon, Google, Microsoft, etc.
Vivek Sankaran -
Advanced Pandas Aggregations for Data Analysts and Scientists
Enhance your data analysis toolkit with complex pandas aggregation techniques for deeper insightsNathan Rosidi -
Mastering Apple Interview Process: Full Guide for Data Scientist
Unlock the Secrets of the FAANG Interview Process: From Resume Evaluation to Offer NegotiationNathan Rosidi -
Data Engineer vs Data Scientist: Similarities and Differences
Data Engineer vs Data Scientist: Explaining what data scientists and data engineers have in common. And what they don’t.Nathan Rosidi -
SQL BETWEEN Operator: Selecting the Range of Values
Learn how to select the data interval using the SQL BETWEEN. We will show you its syntax and different scenarios of using it in filtering and labeling data.Nathan Rosidi -
Solving LeetCode Two Sum Problem for Data Science Interviews
In this guide, we will explore three different solutions to a simple data science question called "Two Sum" from the LeetCode platform.
Irakli Tchigladze -
What Skills Do You Need as a Data Scientist?
What makes you keep your job and advance as a data scientist is the sweet spot between technical and non-technical skills.Nathan Rosidi -
Technical Skills Needed as a Data Analyst with 1-2 Years of Experience
An overview of the top must-have technical skills a data analyst needs to stay competitive in the job market.Vivek Sankaran -
Uber SQL Interview Questions
Breaking down the solution to one of the interesting Uber SQL interview questionsIrakli Tchigladze -
Illustrated Guide About Self Join in SQL
Mastering SQL Self Joins: how they work, why they multiply rows, and when to use them for comparisons, retention, and deduplication.Nathan Rosidi -
Solving LeetCode Single Number Problem for Data Science Interviews
How does a data scientist solve the LeetCode Single Number problem in Python to prepare for their data science interviews?Nathan Rosidi -