J.O. MUILI, A. AUDU , A.B. ODEYALE , AND I.O. OLAWOYIN. Ratio Estimators for Estimating Population Mean Using Tri-mean, Median and Quartile Deviation of Auxiliary Variable. NIPES - Journal of Science and Technology Research, [S. l.], v. 1, n. 1, 2019. Disponível em: https://journals.nipes.org/index.php/njstr/article/view/26. Acesso em: 22 oct. 2024.