# Section 13: Hierarchical Clustering

**References:
**
- [An Introduction to Statistical Learning](https://www.statlearning.com/)  (Download free pdf)
- [Jose Portilla's 2021 Python for Machine Learning & Data Science Masterclass](https://www.udemy.com/course/python-for-machine-learning-data-science-masterclass/)

![19_ml_13_1Oct21.png](https://cdn.hashnode.com/res/hashnode/image/upload/v1633310238954/MPie8KAQb.png)