ISMAEEL, SHELAN SAIED. TESTING FEEDBACK BY USING F TEST. Journal of Global Research in Mathematical Archives(JGRMA), [S. l.], v. 2, n. 2, p. 01–13, 2014. Disponível em: https://jgrma.com/index.php/jgrma/article/view/165. Acesso em: 15 mar. 2025.