Resources

Discover resources that will boost your progress and enhance your data science learning experience and professional performance.

Here is a selection of practice exams that will test your current data science knowledge. Identify key areas of improvement to strengthen your theoretical preparation, critical thinking, and practical problem-solving skills so you can get one step closer towards realizing your professional goals.

Green cover of Excel Functions. This practice exam is from 365 Data Science.
Practice Exams excel
Excel Functions

The majority of data comes in spreadsheet format, making Excel the #1 tool of choice for professional data analysts. The ability to work effectively and efficiently in Excel is highly desirable for any data practitioner who is looking to bring value to a company. As a matter of fact, being proficient in Excel has become the new standard, as 82% of middle-skill jobs require competent use of the productivity software. Take this free Excel Functions practice exam and test your knowledge on removing duplicate values, transferring data from one sheet to another, rand using the VLOOKUP and SUMIF function.

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Green Cover of Useful Tools in Excel. This practice exam is from 365 Data Science.
Practice Exams excel
Useful Tools in Excel

What Excel lacks in data visualization tools compared to Tableau, or computational power for analyzing big data compared to Python, it compensates with accessibility and flexibility. Excel allows you to quickly organize, visualize and perform mathematical functions on a set of data, without the need for any programming or statistical skills. Therefore, it is in your best interest to learn how to use the various Excel tools at your disposal. This practice exam is a good opportunity to test your excel knowledge in the text to column functions, excel macros, row manipulation and basic math formulas.

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Green Cover of Excel Basics. This practice exam is from 365 Data Science.
Practice Exams excel
Excel Basics

Ever since its first release in 1985, Excel continues to be the most popular spreadsheet application to this day- with approximately 750 million users worldwide, thanks to its flexibility and ease of use. No matter if you are a data scientist or not, knowing how to use Excel will greatly improve and optimize your workflow. Therefore, in this free Excel Basics practice exam you are going to work with a dataset of a company in the Fast Moving Consumer Goods Sector as an aspiring data analyst and test your knowledge on basic Excel functions and shortcuts.

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Grey cover of A/B Testing for Social Media. This practice exam resource is from 365 Data Science.
Practice Exams theory
A/B Testing for Social Media

In this free A/B Testing for Social Media practice exam, you are an experienced data analyst who works at a new social media company called FilmIt. You are tasked with the job of increasing user engagement by applying the correct modifications to how users move on to the next video. You decide that the best approach is by conducting a A/B test in a controlled environment. Therefore, in order to successfully complete this task, you are going to be tested on statistical significance, 2 tailed-tests and choosing the success metrics.

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Grey cover of Fundamentals of A/B Testing. This practice exam resource is from 365 Data Science.
Practice Exams theory
Fundamentals of A/B Testing

A/B Testing is a powerful statistical tool used to compare the results between two versions of the same marketing asset such as a webpage or email in a controlled environment. An example of A/B testing is when Electronic Arts created a variation version of the sales page for the popular SimCity 5 simulation game, which performed 40% better than the control page. Speaking about video games, in this free practice test, you are a data analyst who is tasked with the job to conduct A/B testing for a game developer. You are going to be asked to choose the best way to perform an A/B test, identify the null hypothesis, choose the right evaluation metrics, and ultimately increase revenue through in-game ads.

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Grey Cover of Intro to Machine Learning. The practice exam resource is from 365 Data Science.
Practice Exams theory
Intrо to Machine Learning

State-of-the-art machine learning algorithms have opened a whole new realm of possibilities for businesses to optimize their processes and create new product/service features, that maximize competitive advantages. Used in recommendation systems, fraud detection, spam filtering, self-driving cars, to name a few, these advanced algorithms are only getting more popular by the day. Take this free machine learning practice exam and test your knowledge on supervised, unsupervised and reinforcement machine learning, and their applications.

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Grey cover of Introduction to Data Science Disciplines. This practice exam resource is from 365 Data Science.
Practice Exams theory
Introduction to Data Science Disciplines

The term “Data Science” dates back to the 1960s, to describe the emerging field of working with large amounts of data that drives organizational growth and decision-making. While the essence has remained the same, the data science disciplines have changed a lot over the past decades thanks to rapid technological advancements. In this free introduction to data science practice exam, you will test your understanding of the modern day data science disciplines and their role within an organization.

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Ocean blue cover of Advanced SQL. This practice exam is from 365 Data Science.
Practice Exams SQL
Advanced SQL

In this free Advanced SQL practice exam you are a sophomore Business student who has decided to focus on improving your coding and analytical skills in the areas of relational database management systems. You are given an employee dataset containing information like titles, salaries, birth dates and department names, and are required to come up with the correct answers. This free SQL practice test will evaluate your knowledge on MySQL aggregate functions , DML statements (INSERT, UPDATE) and other advanced SQL queries.

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Ocean blue cover of Data Manipulation in SQL. This template resources is from 365 Data Science.
Practice Exams SQL
Data Manipulation in SQL

SQL is one of the top programming languages that is used by top global companies like Microsoft, Spotify, Netflix, and Uber thanks to its amazing data retrieval, storage, and manipulation abilities. In this free Data Manipulation in SQL practice exam, we will be testing your knowledge on the SQL DML( Data Manipulation Language) statements, the WHERE clause, the CALL Statement, and SQL stored routines and procedures.

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Ocean blue cover of SQL SELECT Statement. This practice exam is from 365 Data Science.
Practice Exams SQL
SQL SELECT Statement

SQL is one of the most popular and in-demand programming languages, because of its intuitive syntax, ubiquitous presence in the business world, and ability to query data and perform analysis. Therefore, possessing SQL skills will give you a significant career advantage in the modern data-driven workforce. Test your knowledge in the basics of SQL with this free SQL SELECT Statement practice exam designed by 365 Data Science instructor Martin Ganchev. These set of SQL questions will test your knowledge on creating databases, SQL Constraints, and the SQL Select Query by giving you a free .sql file containing company data, to work with.

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Yellow Cover of For Loops in Python - Practice Exam. The resource is from 365 Data Science.
Practice Exams python
For Loops in Python

In this free For Loops in Python practice exam by Python expert and instructor Giles McMullen-Klein, you have just started working as a junior software engineer at Challenger. Your job is to improve the automatization of the supply and distribution processes by using the Python programming language. These Python practice problems are going to test your coding abilities as you are asked to help the company with implementing for-loops, executing conditional statements, and estimating daily sales of certain products.

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Green Cover of Data Visualization in Middle-Earth. This practice exam is from 365 Data Science.
Practice Exams excel
Data Visualization in Middle-Earth

If you have ever wanted to use your data visualization skills for a nobler cause that does not involve revenue growth, then this free Data Visualization in Middle-Earth practice exam, by instructor Elitsa Kaloyanova, is for you. As the faith of Middle Earth is entrusted into your hands, you are required to use your data visualization and interpretation skills in Excel to answer these data visualization quiz questions and save the magic lands from destruction.

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Grey Cover of Interpreting Data. The practice exam is from 365 Data Science.
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Interpreting Data

The free Interpreting Data practice exam by top business executive and data enthusiast Oliver Maugain who has had a prolific career in the financial, advertising, and chemical industry. His goal is to help students master the language of data by personally creating this set of data literacy exercises that are meant to put your data interpretation skills to the test, as you are asked to perform various fundamental analyses techniques on a set of real estate sales data.

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Grey Cover of Reading Data. The practice exam is from 365 Data Science.
Practice Exams theory
Reading Data

These free Reading Data test questions were carefully crafted by top data culturist Oliver Maugain- Decision Intelligence Manager at a major European retailer who supports the organization in making better and faster decisions using data. The Reading Data practice exam is going to put your data description ability to the test as you are asked to describe the basic characteristics of a travel questionnaire- like the standard deviation, median and mode of the dataset.

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Grey Cover of Using Data. The practice exam is from 365 Data Science.
Practice Exams theory
Using Data

This free practice exam on Using Data designed by 365 Data Science collaborator Oliver Maugain- top-level executive at a major European retail brand and a passionate data literacy teacher who wants to popularize the language of data. The data literacy assessment exam contains data literacy questions which are going to test your comprehension on how data is being used and the different machine learning and business analytics techniques.

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Grey Cover of Understanding Data. The practice exam is from 365 Data Science.
Practice Exams theory
Understanding Data

This set of data literacy test questions were carefully crafted by top data culturist Oliver Maugain- Decision Intelligence Manager at a major European retailer who supports the organization in making better and faster decisions using data. The Data Literacy Intro practice exam contains 6 data literacy questions which are going to quiz you on data terminology, different types of data, different data storage systems and the technical tools required to analyze data.

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Yellow Cover of Strings & Conditionals in Python - Practice Exam. The course notes resource is from 365 Data Science.
Practice Exams python
Strings & Conditionals in Python

The free Strings & Conditionals practice exam is made by famous YouTube Python Programmer and teacher Giles McMullen-Klein. In this practice case, you are a first year Software Engineer who is taking his end-of-year exam, where you are required to use the relevant Python techniques to pass. This set of Python programming practice questions is going to test your foundations in printing functions, conditional expression execution and indexing in string slicing.

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Yellow Cover of Intro to Stacks and Matplotlib Visualization - Practice Exam. The resource is from 365 Data Science.
Practice Exams python
Intro to Stacks and Matplotlib Visualization

In this free Intro to Stacks and Matplotlib Visualization practice exam by Oxford physics graduate and experienced Python programmer Giles McMullen-Klein, you are the software engineer for a scientific research agency. Your task is to conduct research on the relationship between innovative eye-tracking technology and voting behavior in the USA, therefore these Python practice exercises are going to test your coding skills and ability to visually represent your conclusions in matplotlib.

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Yellow Cover of Files and Functions in Python - Practice Exam. The resource is from 365 Data Science.
Practice Exams python
Files and Functions in Python

Prominent figure in the online Python community and established programming teacher Giles McMullen-Klein created this free practice exam on Files and Functions in Python where you are working as an app developer for sports startup company. The success of the project depends on your Python skills; therefore, these Python practice test questions are going to quiz you on Python code writing efficiency, file handling, dictionary functions and object creation.

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Grey Cover of Data Science Interview Process. The practice exam is from 365 Data Science.
Practice Exams theory
Data Science Interview Process

According to Senior Data Scientist Ken Jee Less than 5% of data scientist job applicants successfully land a job. Most of the time, the main reason for this low success rate is the applicant’s misrepresentation of their skills and not their lack of qualifications, which is why in this free Data Science Interview Process practice exam you are going to be tested on the methodology behind successfully passing the recruitment process- the phone interview, the take home test and the in-person interview.

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