Effects of heterogeneous variance on X̄ chart

• Main Author: W. Chattinnawat
• Format: Conference Proceeding
• Published: 2018
• Subjects: Business, Management and Accounting; Engineering
• Online Access: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=62749108436&origin=inward; http://cmuir.cmu.ac.th/jspui/handle/6653943832/60213
• Institution: Chiang Mai University

This research investigated the performance of the X̄ chart when the heterogeneous variation occurs. Machines are regarded as another source of variations with an assumption that the expectation of the quality characteristics produced by each machine is normally distributed. This study report the der...