Dendrogram

Figure 1. Dendrogram for simple matching solution
Dendrogram for simple matching solution

The dendrogram shows that the usage patterns of MULTLINE and CALLCARD are different from the other services. These others are grouped into three clusters. One cluster includes WIRELESS, PAGER, and VOICE. Another includes EQUIP, INTERNET, and EBILL. The last contains TOLLFREE, CALLWAIT, CALLID, FORWARD, and CONFER. The WIRELESS cluster is closer to the INTERNET cluster than the CALLWAIT cluster.

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