Median based modified ratio estimators for the estimation of finite population mean with known quartiles and median and skewness. Nonlinear Studies, [S. l.], v. 33, n. 3, p. 1021–1029, 2026. Disponível em: https://nonlinearstudies.com/index.php/nonlinear/article/view/4467. Acesso em: 31 aug. 2026.