Improving Mean Estimation through Structured Sampling: Theoretical and Empirical Advances under Ranked Set Sampling. ACADEMIA International Journal for Social Sciences, [S. l.], v. 4, n. 3, p. 5393–5411, 2025. DOI: 10.63056/. Disponível em: https://academia.edu.pk/index.php/Journals/article/view/798. Acesso em: 19 sep. 2025.