Khamrod , S., Areepong, Y., Sukparungsee, S. and Sunthornwat, R. (2026) “Improving Process Monitoring with a New Modified EWMA Control Chart for ARMA Models: A Case Study on Palm Oil Prices in Thailand”, Thailand Statistician, 24(3), pp. 635–653. available at: https://ph02.tci-thaijo.org/index.php/thaistat/article/view/266518 (accessed: 15 September 2026).