In non-hierarchical clustering,plotting the ratio of total within-group variance to between-group variance against the number of clusters is useful if you are ________.
A) interpreting and profiling the clusters
B) deciding on the number of clusters
C) assessing the validity of clustering
D) both B and C

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The Answer of In non-hierarchical clustering,plotting the ratio of total within-group variance to between-group variance against the number of clusters is useful if you are ________.
A) interpreting and profiling the clusters
B) deciding on the number of clusters
C) assessing the validity of clustering
D) both B and C

In Non-Hierarchical Clustering,plotting the Ratio of Total Within-Group Variance to Between-Group