In this paper a generalized EWMA control chart (GEWMA) which does not depend on δ is proposed for detecting the mean shift. We compare theoretically the GEWMA control chart with the optimal EWMA, ...

A multivariate extension of the exponentially weighted moving average (EWMA) control chart is presented, and guidelines given for designing this easy-to-implement multivariate procedure. A comparison ...

Starting a new quality control or reagent lot is a critical point in the workflow of a lab. Standard clinical laboratory practices can vary during this process and these changes have the potential to ...