StrataScratch is a data science educational platform with over 1,000+ real interview questions from your favorite companies.
Using SQL COUNT(DISTINCT) is an easy way to count distinct values in SQL. However, it has its own quirks, which we’ll explain (with examples) in this article.
Data structure interview questions are a big part of interviews for many data roles. To answer them, you should know the data structures we’ll cover here.
Data cleaning is an integral part of every data science project. This tedious but essential task can be much easier if you start using these Python libraries.
Master Python's index() function to efficiently locate items in lists, handle errors with custom functions, and improve data analysis using advanced techniques.