Ng Peh SangMichael B. C. KhooSajal SahaWai Chung Yeong2024-10-172024-10-172019-09-17https://doi.org/10.1080/03610918.2019.1664575https://dspace-cris.utar.edu.my/handle/123456789/3097Economic and economic-statistical designs of auxiliary information based X¯, synthetic and EWMA chartsjournal-article