Question

1. Questions 24-25

   Thirty observations in a data set were partitioned by the 3-means clustering method and the following information from Data Mining is avaiable.

   Cluster Summary                    

   Cluster	Size	Average Distance
   Cluster 1	7	0.679
   Cluster 2	19	0.947
   Cluster 3	4	0.231

   Inter-Cluster Distances

   Cluster	cluster 1	Cluster 2	Cluster 3
   Cluster 1	0	1.682	1.119
   Cluster 2	1.682	0	0.935
   Cluster 3	1.119	0.935	0

   Q24: Cluster 3 is

   	a.	the largest and the least heterogenous
   	b.	the smallest and the most homogenous
   	c.	the largest and the most heterogeneous
   	d.	the largest and the most homogenous
   	e.	None of the above

2 points   

QUESTION 25

1. Q25: ______ is the most heterogenous.

   	a.	Cluster 1
   	b.	Cluster 2
   	c.	Cluster 3
   	d.	cannot tell from the provided information
   	e.	None of the above

Answer all questions

Answer 1

Given:

Cluster Summary                    

Cluster	Size	Average Distance
Cluster 1	7	0.679
Cluster 2	19	0.947
Cluster 3	4	0.231

Inter-Cluster Distances

Cluster	cluster 1	Cluster 2	Cluster 3
Cluster 1	0	1.682	1.119
Cluster 2	1.682	0	0.935
Cluster 3	1.119	0.935

From the above goven cluster summary

24) Cluster 3 is smallest and most homogeneous.

Answer - option b

25) Cluster 2 is the most heterogenous.

Answer - option b