Wu, Zhang; Jiao, Jianxin; He, Zhen - In: International Journal of Production Economics 119 (2009) 1, pp. 24-33
While many control charts have been developed for monitoring the time interval (T) between the occurrences of an event; many other charts are employed to examine the magnitude (X) of the event. This article presents a single statistical process control (SPC) chart (called the rate chart) for...