Please use this identifier to cite or link to this item:
|Title:||Designs of one- and two-sided exponential EWMA charts|
|Keywords:||Average Run Length|
Statistical Process Control
|Citation:||Gan, F.F. (1998-01). Designs of one- and two-sided exponential EWMA charts. Journal of Quality Technology 30 (1) : 55-69. ScholarBank@NUS Repository.|
|Abstract:||Exponentially weighted moving average (EWMA) control charts are developed for monitoring the rate of occurrences of rare events based on the interarrival times of these events. The average run lengths of the EWMA charts are determined exactly based on the solution of a set of differential equations. The effects of using boundaries on the one-sided EWMA charts are examined, and reasonable choices of boundaries are proposed. A simple design procedure is provided for determining the chart parameters of a one-sided or a two-sided EWMA chart. The chart obtained using the design procedure is optimal within the class of EWMA charts. The cumulative sum (CUSUM) and EWMA charts are compared based on the average run length. The CUSUM chart is found to be optimal in detecting the intended mean, while the EWMA chart is found to be slightly less sensitive.|
|Source Title:||Journal of Quality Technology|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Aug 3, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.