This is short tutorial for
What it is? (What do we mean by a cluster?)
How it is different from decision tree?
What is distance and linkage function?
What is hierarchical clustering?
What is scree plot & dendogram?
What is non hierarchical clustering (k-means)?
How to learn it in detail (step by step)?
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Read in great detail along with Excel output, computation and SAS code
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https://www.udemy.com/cluster-analysis-motivation-theory-practical-application/?couponCode=FB_CA_001
