Data Science Educational Resources
StrataScratch is a data science educational platform with over 1,000+ real interview questions from your favorite companies.
Guides
HackerRank for Data Science
Let's find out if HackerRank coding challenges and their practice questions can help you prepare for your data science interview.
Nathan Rosidi -
Amazon Data Scientist Salary
An in-depth exploration into Amazon data scientist salary, the impact of experience, location, and role, and drawing comparisons with other FAANG counterparts.Nathan Rosidi -
The Ultimate Guide to SQL Window Functions
This is a complete overview of the SQL window functions. Learn everything you need to know about them to excel at your job interview and an actual job.
Tihomir Babic -
SQL CTEs: Usage, Advantages, and Drawbacks
All about SQL CTEs or Common Table Expressions, their types, and usage. We will also discuss the advantages and disadvantages of using them in your SQL queries.Nathan Rosidi -
A Beginner’s Guide to Collinearity: What it is and How it affects our regression model
What is Collinearity? How does it affect our model? How can we handle it?Nathan Rosidi -
Basic Types of Statistical Tests in Data Science
Navigating the World of Statistical Tests: A Beginner’s Comprehensive Guide to the Most Popular Types of Statistical Tests in Data ScienceNathan Rosidi -
How to Join 3 or More Tables in SQL
Here we’re going to talk about using a commonly required SQL concept - how to join 3 or more tables in SQL.Nathan Rosidi -
An Introduction to the SQL Rank Functions
This introduction covers two of the most common SQL Rank Functions, their differences, and how to use them.Nathan Rosidi -
The Ultimate Guide to SQL Aggregate Functions
Aggregate Functions in SQL is the main tool for data aggregation and one of the most common topics when working with data.Nathan Rosidi -
Introduction to IFNULL() Function in SQL
Learn all about the SQL IFNULL() function in MySQL and PostgreSQL with the example of a hard-level Interview Question asked by Google.Nathan Rosidi -
LeetCode Python Solutions for Data Science
How does a data scientist use LeetCode to practice their python skills for their data science interviews?Nathan Rosidi -
19 Data Science Project Ideas for Beginners
Data science projects are crucial for job finding. They let you learn and show that you can do the actual work in practice, not just blabber about it.Tihomir Babic -