Suggested technique for Estimation preference grades proportion for several independent groups by using the Self - Consistent criteria in Factor Analysis. Journal of Al-Rafidain University College For Sciences ( Print ISSN: 1681-6870 ,Online ISSN: 2790-2293 ), [S. l.], v. 29, n. 1, p. 17–31, 2021. DOI: 10.55562/jrucs.v29i1.374. Disponível em: https://jrucs.iq/index.php/JAUCS/article/view/374. Acesso em: 29 jun. 2026.