Pooled variance is a useful statistical tool that combines the variances of two or more independent samples to create an estimate of the overall population variance. This method is often used when ...

variance and covariance estimates are not very good in small or very small samples. One idea is to use penalized or shrinkage (co)variance to get better small sample properties. In oneway and similar ...

My code stopped working after updating mice to version >3. I wish to retrieve the estimated variance-covariance matrix from linear regressions on multiply imputed datasets. This quantity (which mice ...

This article introduces the concepts of pooled variance and the central limit theorem, which are intended for establishing acceptance criteria for blend uniformity data of granular powder blends when ...

Often in longitudinal studies, some subjects complete their follow-up visits, but others miss their visits due to various reasons. For those who miss follow-up visits, some of them might learn that ...