ISAH MUHAMMAD; MANNIR ABDU; ADEFEMI EMMANUEL; MUJTABA SULEIMAN. Ratio-product cum regression variance estimators in the presence of random Nonresponse. JOURNAL OF BASICS AND APPLIED SCIENCES RESEARCH, [S. l.], v. 4, n. 2, p. 307–319, 2026. DOI: 10.4314/jobasr.v4i2.30. Disponível em: https://jobasrfudutsinma.com/index.php/ojs-files/article/view/335. Acesso em: 7 apr. 2026.