# Linear regression. Find the best-fitting plane.

Eight synthetic houses make a numerical learning story. Adjust a plane, measure squared residuals, and see how a design matrix organises the calculation.

Explore ordinary least squares, interpret a prediction, and investigate collinearity, ridge and outliers. Predict, experiment and explain, with paced conversations and thinking questions.

This premium lesson has its own access setting, covering the interactive and all ten audio conversations.

Canonical page: https://21ifm.com/ml/linear-regression

## Explore

- [Logistic regression series](https://21ifm.com/ml)
- [Priors and Bayes](https://21ifm.com/ai/priors-bayes)