Course overview

Throughout this machine learning course, you’ll learn what’s happening in the model training process. You’ll also explore scikit-learn, one of the most useful and robust open-source machine learning libraries for the Python programming language.

You’ll learn concepts such as K-Nearest Neighbors (KNN) Algorithms and error metrics such as the Mean Squared Error and the Root Mean Squared Error. You’ll also learn about hyperparameter optimization, a technique used to optimize machine learning algorithms to improve trained models. Then you’ll dig into some k-fold cross-validation to perform more rigorous testing for your model.

Best of all, you’ll learn by doing — you’ll practice and get feedback directly in the browser. You’ll apply your skills to several guided projects involving realistic business scenarios to build your portfolio and prepare for your next interview. In the guided project, you’ll build a model to predict car prices. This project is a chance for you to combine the skills you learned in this course and practice the machine learning workflow.

Key skills

  • Understanding the key concepts of machine learning

  • Avoiding common pitfalls in machine learning

  • Employing logical operators and comparison operators

  • Optimizing models for accuracy and efficiency

Course outline

    Loading lessons...

Projects in this course

The Dataquest guarantee

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

  • We believe so strongly in our courses that we offer a full satisfaction guarantee. If you complete a career course 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

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

Build your project portfolio

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

Challenge yourself with exercises

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

Showcase your course certification

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

Learning resources

How to Learn
Data Science

Learn a proven method to acquire and use data skills.

Read Article

Dataquest Reviews

Read more about what learners think of Dataquest.

Read Article

How To Learn Python

A step by step guide to learn and master Python.

Read Article

Python Practice

65 different Python practice exercises you can start today.

Read Article

Learner testimonials


Learners who recommend
Dataquest for career advancement


Dataquest rating on
G2Crowd and SwitchUp


Average salary boost
for learners who complete a path

Join 1M+ data learners on

  • 1

    Sign up for a free account

  • 2

    Choose a course or path

  • 3

    Learn with hands-on exercises

  • 4

    Apply your skills

Start learning with a free account today.

Sign Up For Dataquest