In a test, almost every student chose a right word for the picture of an apple. We say this item has __________.
Alow discrimination正確答案
Blow reliability
Chigh difficulty
Dhigh validity
答案與詳解
為什麼答案是 A
鑑別度（discrimination）指試題能否區分高分組與低分組學生。若幾乎所有人都答對，高低分組得分差距極小，鑑別度自然偏低，此題無法有效篩選出能力差異。
考點：鑑別度考點：信度概念考點：難度誤解考點：效度概念
載入中…
