21 Must-Have Cheat Sheets for Data Science Interviews: Unlocking Your Path to Success





With data science being such a broad and constantly developing field, it’s really impossible to have all the knowledge in your head. Especially if some of this knowledge you use only occasionally. Also, if you’re a beginner in a certain field, you’ll have to refresh very often what you learned until it becomes actual knowledge at the crossroads of theory and practice.


Having something that you could lo has researched and presents the best data science cheat sheets from around the internet, so you don’t have to do it yourself.

By , KDnuggets Market Trends & SQL Content Specialist on June 8, 2023 in Career Advice

With data science being such a broad and constantly developing field, it’s really impossible to have all the knowledge in your head. Especially if some of this knowledge you use only occasionally. Also, if you’re a beginner in a certain field, you’ll have to refresh very often what you learned until it becomes actual knowledge at the crossroads of theory and practice.


Having something that you could look at and get the info you need at a glance would be pretty helpful, right? he1atet. And it has nothing to do with cheating. They are used for learning and revisioning what you already know.

Due to their intention of being (relatively) concise and high-level, having one cheat sheet for the whole data science would beat its (the cheat sheet’s, not data science’s) purpose.Even if creating such a cheat sheet would be possible..







Knowing the coding languages is the basis upon which all other parts of data science are built. Especially popular in the data science community is the holy trinity of coding languages:

  • 1language specifically designed for querying databases, SQL is a champion when it comes to data extraction and manipulation.

  • This cheat sheet focuses on enabling you to write functional SQL queries from the start. To do that, you’ll need to be familiar with certain concepts.  JOINs. The

    Apart from a short explanation of every concept, the cheat sheet also gives you a query based on the sample data to show you how everything works in practice.

    The cheat sheet is also downloadable in PDF or PNG format, making it practical for printing out and having it in handy.These are querying a single table, filtering data, and querying multiple tables using the are also the aggregate functions, subqueries, and set operators (UNION, INTERSECT, EXCEPT) covered.

  • Python is, for a reason one of the most commonly used programming languages in data science. It excels in all the areas required. It really does everything from data extraction and manipulation or statistical analysis and visualizing data to machine learning, model deployment, and automation.

  • This very comprehensive yet very clear cheat sheet is perfect for anybody wanting to have a basis for starting working in Python. It explains the main data types in Python, including creating and storing strings and doing math operations on data. You’ll also learn about built-in functions, creating functions, lists, tuples, and dictionaries.

    The cheat sheet goes on to give you an overview of the conditional statements, Python loops, classes, and even dealing with Python errors.

    You can download the cheat sheet in PDF or infographic (PNG) format.

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