The analysis of experimental data often necessitates statistical comparisons of similarity between observations that incorporate either systematic or purely random measurement errors. Systematic ...

Almost every day you can find in media commentary that XYZ is causing stocks to fall (or rise). Such definitive statements are common—but what’s almost always missing is statistical proof. And if you ...

Suppose estimates are available for correlations between pairs of variables but that the matrix of correlation estimates is not positive definite. In various applications, having a valid correlation ...