To evaluate an item in a test, we can subtract the number in the bottom group of students who got the item right from the
number getting it right in the top group and divide this figure by the total number of papers in the top and bottom group
combined. By this procedure, we can understand the ____________________ of the item.
(A) reliability
(B) validity
(C) difficulty level
(D) discrimination level
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統計: A(15), B(26), C(71), D(137), E(0) #198238
統計: A(15), B(26), C(71), D(137), E(0) #198238
詳解 (共 1 筆)
#168880
鑑別度指數(D)=高分組答對百分比(PH) ─ 低分組答對百分比(PL)。
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