Why The Clustering Techniques Are Used? Justify The Reasons With Examples

Clustering refers to classification of data into different groups or subsets on the basis of their shared common traits. Clustering is an important concept of Statistics which is applied to other fields such as image analysis, bioinformatics, marketing, data mining etc. It is used for Market research for determining the target markets, for social network analysis, for image segmentation etc. There are enormous uses of Clustering, you can find the details on the link below:
en.wikipedia.org
You can also find relevant examples on the following link:
members.tripod.com