Author: Vincent Granville

The original article is no longer available. Similar (and more comprehensive) material is available below.

*Example of underfitted, well-fitted and overfitted models*

**Content**

**Regression**

- What Is Regression?
- When Do You Need Regression?

**Linear Regression**

- Problem Formulation
- Regression Performance
- Simple Linear Regression
- Multiple Linear Regression
- Polynomial Regression
- Underfitting and Overfitting

**Implementing Linear Regression in Python**

- Python Packages for Linear Regression
- Simple Linear Regression With scikit-learn
- Multiple Linear Regression With scikit-learn
- Polynomial Regression With scikit-learn
- Advanced Linear Regression With statsmodels

**Beyond Linear Regression**

**Conclusion**

You can access this material here.