Clustering mixed data: Find optimal number of clusters What do you say about this plot to find the number of cluster for kmean or kproto for mixed data. Where is the elbow to identify? I would say 5? I have 11 feautures.
You should select 9 as you can see from plot that for the WSS value there is a dip. 

It doesn’t matter if you have 2 features or 9 features or n features. Clustering is on Data present in those features(it might depend on the amount of data).