Anis Nabila Binti MuhammadWai Chung YeongChong Zhi LinSok Li LimMichael Boon Chong Khoo2024-10-292024-10-292018-12https://doi.org/10.1016/j.cie.2018.09.045https://dspace-cris.utar.edu.my/handle/123456789/5375Monitoring the coefficient of variation using a variable sample size EWMA chartjournal-article