Question

____ measures the goodness of a cluster

Answer 1

Cohesion measures the goodness of a cluster

Answer 2

Cohesion measures the goodness of a cluster.

Explanation:  

Cluster cohesion: Measures the closeness of the objects within the same cluster. A “lower within-cluster” variation indicates good compactness or good clustering. The separation method is implied to measure how well a cluster is separated from other clusters. The quality of a good clustering result is determined by the similarity measures used by the clustering method and its execution. The quality of any type of clustering method is a measure of its ability to find the hidden patterns.