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
寫作批改
VIP與詳解卡管理
私人筆記( 0 )