Performance comparison of the exact run-length distribution between the run sum X and EWMA X charts

• Main Authors: Chong, J.K., Teoh, W.L., Khoo, Michael B.C., Chong, Z.L., Teh, S.Y.
• Format: Article
• Language: English
• Published: Pusat Pengajian Sains Matematik, Fakulti Sains dan Teknologi, Universiti Kebangsaan Malaysia 2016
• Online Access: http://journalarticle.ukm.my/10200/1/jqma-12-1_2-paper2.pdf; http://journalarticle.ukm.my/10200/; http://www.ukm.my/jqma/jqma12_1_2a.html

The run sum (RS) X and exponentially weighted moving average (EWMA) X charts are very effective in detecting small and moderate process mean shifts. The design of the RS X and EWMA X charts based on the average run length (ARL) alone, can be misleading and confusing. This is due to the fact that...