https://www.youtube.com/watch?v=kw9R0nD69OU&list=RDCMUCBVCi5JbYmfG3q5MEuoWdOw&index=6&ab_channel=Udacity

https://www.youtube.com/watch?v=FgakZw6K1QQ&list=PLblh5JKOoLUIcdlgu78MnlATeyx4cEVeR&ab_channel=StatQuestwithJoshStarmer

• Basic understanding
• interesting use case: Outlier detection

https://www.youtube.com/watch?v=ZK3_T-UgKWM