Data Science Educational Resources
StrataScratch is a data science educational platform with over 1,000+ real interview questions from your favorite companies.
Interviews
Advanced SQL Interview Questions You Must Know How to Answer
Advanced SQL interview questions that every data scientist should know. It is quite important to understand what is being tested and how you can prepare for it.
Nathan Rosidi -
Python Data Engineer Interview Questions
A comprehensive guide on Python concepts and questions from top companies for all the budding Data Engineers to help them in preparing for their next interview.Nathan Rosidi -
Different Types of SQL JOINs that You Must Know
In this article, we will discuss different types of SQL JOINs and show practical examples to help you wrap your head around a variety of JOINs in SQL.
Irakli Tchigladze -
Facebook Data Engineer Interview Questions
Interview questions for all the data engineers that wish to work at Meta/Facebook. We carefully selected the interview questions to reflect the data engineer job description as closest as possible.Nathan Rosidi -
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 -