Statistics: Quartiles, Quantiles, and IQR

Sometimes data needs to be described in terms of distributions, quartiles, quintiles, and IQR let you do just that.

  • Skill level

  • Time to complete

    Approx. 3 hours
  • Certificate of completion

    Included with paid plans
  • Prerequisites


About this course

Datasets are more than just a single number, and sometimes you want to describe variables based on a range of numbers, to better explain the distribution of values. Quartiles, Quintiles, and the Inter-quartile range (IQR) help you do just that. Learn how and when to use each of these measures in this course.

Skills you'll gain

  • Calculate quartiles, quintiles, and the IQR of a dataset

  • Decide when quartiles, quintiles, and the IQR are the most appropriate

  • Interpret these measures with respect to a dataset.


The platform

Hands-on learning

Don’t just watch or read about someone else coding — write your own code live in our online, interactive platform. You’ll even get AI-driven recommendations on what you need to review to help keep you on track.
Animated demonstration of running code in Codecademy's learning environment

Reviews from learners

  • 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.
    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.
    Codecademy Learner @ UK
  • Brilliant learning experience. Very interactive. Literally a game changer if you're learning on your own.
    Codecademy Learner @ USA

Our learners work at

Google Logo
Meta Logo
Apple Logo
EA Logo
Amazon Logo
IBM Logo
Microsoft Logo
Reddit Logo
Spotify Logo
Uber Logo
YouTube Logo
Instagram Logo

Unlock additional features with a paid plan

Practice projects

Guided projects that help you solidify the skills and concepts you're learning.


Auto-graded quizzes and immediate feedback help you reinforce your skills as you learn.

Certificate of completion

Earn a document to prove you've completed a course or path that you can share with your network.

Join over 50 million learners and start Statistics: Quartiles, Quantiles, and IQR today!