Free
Course

Probability

Learn the fundamentals of probability and how to quantify and visualize uncertainty.

4.34 out of 5 stars
28,343 learners enrolled
  • Skill level

    Beginner
  • Time to complete

    Average based on combined completion rates — individual pacing in lessons, projects, and quizzes may vary
    4 hours
  • Certificate of completion

    Included with paid plans
  • Prerequisites

    None

About this course

In this unit, we will cover fundamental rules of probability including how to describe random events. We will cover topics such as set theory, conditional probability, joint probability, Bayes rule, probability distributions, and sampling distributions. These concepts are important in order to understand the likelihood of events, fit machine learning models, and perform hypothesis tests.

Syllabus

4 lessons • 2 projects • 3 quizzes
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Probability course ratings and reviews

4.34 out of 5 stars
86 ratings
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  • The progress I have made since starting to use codecademy is immense! I can study for short periods or long periods at my own convenience - mostly late in the evenings.
    Chris
    Codecademy Learner @ USA
  • I felt like I learned months in a week. I love how Codecademy uses learning by practice and gives great challenges to help the learner to understand a new concept and subject.
    Rodrigo
    Codecademy Learner @ UK
  • Brilliant learning experience. Very interactive. Literally a game changer if you're learning on your own.
    John-Andrew
    Codecademy Learner @ USA

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Frequently asked questions about Probability

  • Probability is a type of math that helps us determine the chances of something happening. For example: When you flip a coin, there’s a 50/50 chance of it landing on either heads or tails. That’s essentially what probability is — calculating the likelihood of a certain outcome or event.

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      Access basic material for courses in top subjects like HTML and JavaScript. Quizzes and projects not included with Basic.
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      Connect with other learners, get answers to your questions, and attend fun events.
    • Learning resources
      Cheatsheets, docs, videos, and more to support your learning journey.
    • Real-world projects
      Access our full library of practice and portfolio projects. Apply your skills and build your portfolio.
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      Unlimited access to 300+ stand-alone courses, including everything in Basic plus popular Pro courses like Learn Python 3.
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      Curated learning paths teach you everything you need to gain a specific skill, like building a website or visualizing data.
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