Ward's method | Distance between clusters

Key moments in this video: 00:15 Sum of Squared errors definition 01:01 Sum of Squared errors computation example 03:19 Minimum variance: Ward's method 04:34 Distance between clusters simplified 07:55 Ward's Distance between clusters as weighted centroid distance 08:52 Recap of Agglomerative hierarchical clustering 09:37 Example illustrating the Ward's distance based clustering process Link to Distance between clusters https://youtu.be/cdWD5Y-sMcQ Link to Agglomerative Clustering https://youtu.be/pIVDpoKY0fA