The asymptotic distribution for the principal component roots under local alternatives to multiple population roots is derived. The asymptotic theory assumes the estimate of the population covariance ...

In this article, we develop a new statistic, called the GUD statistic, based on the idea of the Gap method, but use the determinant of the pooled within-group scatter matrix instead of the ...

Visualizing multivariate data with 2D scatter plots usually requires using many of them -- such as with a scatter matrix -- which can overwhelm an observer and obfuscate patterns in the data.