Interpret clustering procedures outputs.

Free CAS MAS-II (Modern Actuarial Statistics II) lesson in Statistical Learning. 14 min read, ~2,026 words.

K-means output = K centroids (cluster means on each feature), cluster assignments, and within-cluster sum of squares. Total decreases monotonically in K. Interpret each centroid against the grand mean feature by feature; on standardized data a centroid at +2.0 SD means that cluster sits two SD above average there. Hierarchical...