A.如果某題區(qū)別指數(shù)為正值,其數(shù)值越小,則該題的區(qū)別度越好
B.如果某題區(qū)別指數(shù)為正值,其數(shù)值越大,則該題的區(qū)別度越好
C.如果某題區(qū)別指數(shù)為負(fù)值,其數(shù)值越大,則該題的區(qū)別度越好
D.如果某題區(qū)別指數(shù)為負(fù)值,其數(shù)值越小,則該題的區(qū)別度越好
E.如果某題區(qū)別指數(shù)為負(fù)值,其數(shù)值越大,則該題的區(qū)別度越差
A.0.2-0.7
B.0.2-0.8
C.0.3-0.7
D.0.3-0.8
E.0.2-0.6