Clustering of Data on the 48 U.S. Contiguous States

Clustering of data on the 48 contiguous states is considered with the geographical information of the states. Data are summarized by referring to properties of a number of regions and displayed on a USA map. An iterative algorithm for such a clustering technique is proposed. Identification of outliers and the choice of the number of the clusters are also discussed. The technique wil be illustrated by using data on economic and population growth.