This paper establishes a criterion that measures approximately the average net income of a process under surveillance of an X̄ chart when the process is subject to random shifts in the process mean.

Dr. William Dietz, an obesity expert who retired last year from the Centers for Disease Control and Prevention, said measuring a patient's exercise regardless of method is essential, but that ...

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 ...