Data Science Educational Resources
StrataScratch is a data science educational platform with over 1,000+ real interview questions from your favorite companies.
Guides
5 Tips to Prepare for a Data Science Interview
Are you wondering how to prepare for Data Science Interview? This data science interview preparation guide covers tips on topics covered during the interviews.
Nathan Rosidi -
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 -