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Which of the following clustering representations and dendrogram depicts the use of Ward’s method proximity function in hierarchical clustering?

A. Q 22, Option A

B. Q 22, Option B

C.  Q 22, Option C

D. Q 22, Option D

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Answer: (D)

Ward method is a centroid method. The centroid method calculates the proximity between two clusters by calculating the distance between the centroids of clusters. For Ward’s method, the proximity between two clusters is defined as the increase in the squared error that results when two clusters are merged. The results of applying Ward’s method to the sample data set of six points. The resulting clustering is somewhat different from those produced by MIN, MAX, and group average.

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