Sangnawakij P. Regression-in-Ratio Estimator and Confidence Interval for the Population Mean for Data with Outliers. Sci Tech Asia [Internet]. 2022 Jun. 29 [cited 2024 Apr. 23];27(2):42-57. Available from: https://ph02.tci-thaijo.org/index.php/SciTechAsia/article/view/246818