An invariance property of common statist
โ
N. Rao Chaganty; A.K. Vaish
๐
Article
๐
1997
๐
Elsevier Science
๐
English
โ 701 KB
Let A be a symmetric matrix and B be a nonnegative definite (nnd) matrix. We obtain a characterization of the class of nnd solutions ~ for the matrix equation A~A = B. We then use the characterization to obtain all possible covariance structures under which the distributions of many common test stat