Variance and clustering
Journal
Proceedings of the American Mathematical Society
Date Issued
1998
Author(s)
DOI
10.1090/S0002-9939-98-04524-9
Abstract
A measure of dissimilarity of real observations is introduced that is used to identify clusters and is based on "gaps", and also on averages of selected subgroups of the observations. This measure is surprisingly associated with the sample variance in a way that leads to a new identity and interpretation of the notion of variance.
Subjects