“The learning paths on Dataquest are incredible. They give you a direction through the learning process – you don’t have to guess what to learn next.”

Otávio Silveira

Data Analyst @ Hortifruti

Course overview

What You’ll Learn in Probability Fundamentals

As you might have guessed from the title, Probability Fundamentals is designed to give you a working understanding of critical concepts in probability that are relevant to the everyday work of data analysis and data science.

Like all Dataquest courses, you’ll work through this course in your web browser, writing code to apply what you’re learning every step of the way.

Working through the course, you’ll use your Python programming skills and the statistics knowledge you’re learning to estimate empirical and theoretical probabilities. You’ll learn the fundamental rules of probability, and then work to solve increasingly complex probability problems.

Finally, you’ll learn about counting techniques like permutations and combinations before synthesizing all your new knowledge in a guided project building the logic for a mobile app that helps gambling addicts more accurately estimate lottery odds to help them overcome their addiction.

By the end of the course, you’ll understand the difference between theoretical and experimental probability. You’ll have experience calculating the probabilities for a variety of different events, and you’ll be able to calculate the number of permutations and combinations possible in experiment outcomes.

Why Learn Probability and Statistics?

Although a lot of data science work is experienced as programming, almost everything that data scientists do involves working with statistics. When data scientists make predictions, they’re dealing with probabilities. The concept of probability might seem basic, but it’s the foundation for even the most advanced predictive models.

And while the actual mathematical operations are often baked into popular data science libraries for quick application, this convenience can be a double-edged sword. Just because a technique is easy to apply, after all, doesn’t mean that it’s correct to apply in every circumstance.

That’s why learning probability and statistics concepts, including those covered in this course, is so important for data scientists. When you understand the why, it becomes much easier for you to identify the correct statistical technique or calculation for the problem you’re trying to solve.

It also becomes easier to explain your analysis to others when you have a firm grasp of why you used the technique you chose.

Key skills

  • Estimating theoretical and empirical probabilities
  • Understanding the fundamental rules of probability
  • Calculating combinations and permutations

Course outline

Introduction to Probability in Python [5 lessons]

Estimating Probabilities 1h

Lesson Objectives
  • Identify random experiments
  • Estimate theoretical probabilities
  • Estimate empirical probabilities

Probability Rules 1h

Lesson Objectives
  • Define sample spaces
  • Read Venn diagrams
  • Define impossible and certain events
  • Define the addition rule
  • Employ set notation

Solving Complex Probability Problems 1h

Lesson Objectives
  • Define set complements
  • Employ complements to solve problems
  • Define the multiplication rule of probability
  • Define independent and non-independent events

Permutations and Combinations 1h

Lesson Objectives
  • Define the Rule of Product
  • Define permutations
  • Define combinations

Guided Project: Mobile App for Lottery Addiction 1h

Lesson Objectives
  • Expand your portfolio with probability and combinatorics
  • Generate business value using probability and combinatorics

Projects in this course

Guided Project: Mobile App for Lottery Addiction

For this project, we’ll work with a medical institute to build a mobile app that helps lottery addicts estimate their odds of winning. Using Python and probability skills, we’ll analyze Canada’s 6/49 lottery as a case study.

The Dataquest guarantee


Dataquest has helped thousands of people start new careers in data. If you put in the work and follow our path, you’ll master data skills and grow your career.


We believe so strongly in our paths that we offer a full satisfaction guarantee. If you complete a career path on Dataquest and aren’t satisfied with your outcome, we’ll give you a refund.

Master skills faster with Dataquest

Go from zero to job-ready

Go from zero to job-ready

Learn exactly what you need to achieve your goal. Don’t waste time on unrelated lessons.

Build your project portfolio

Build your project portfolio

Build confidence with our in-depth projects, and show off your data skills.

Challenge yourself with exercises

Challenge yourself with exercises

Work with real data from day one with interactive lessons and hands-on exercises.

Showcase your path certification

Showcase your path certification

Impress employers by completing a capstone project and certifying it with an expert review.

Grow your career with

of learners recommend
Dataquest for career advancement
Dataquest rating
SwitchUp Best Bootcamps
Average salary boost
for learners who complete a path

Aaron Melton

Business Analyst at Aditi Consulting

“Dataquest starts at the most basic level, so a beginner can understand the concepts. I tried learning to code before, using Codecademy and Coursera. I struggled because I had no background in coding, and I was spending a lot of time Googling. Dataquest helped me actually learn.”


Jessica Ko

Machine Learning Engineer at Twitter

“I liked the interactive environment on Dataquest. The material was clear and well organized. I spent more time practicing then watching videos and it made me want to keep learning.”


Victoria E. Guzik

Associate Data Scientist at Callisto Media

“I really love learning on Dataquest. I looked into a couple of other options and I found that they were much too handhold-y and fill in the blank relative to Dataquest’s method. The projects on Dataquest were key to getting my job. I doubled my income!”

Join 1M+ data learners on


Create a free account


Choose a learning path


Complete exercises and projects


Advance your career

Start learning today