Item Analysis: Difficulty and Discrimination
Difficulty index, discrimination index and distractor analysis, worked step by step.
58explained questions
14items in the 2022 paper
1chapter
Item Analysis & Test Construction
In the 11 December 2022 Vice Principal paper, this chapter's territory supplied roughly 15 of the ~36 measurement questions — about 37 marks. It included the paper's most computational cluster: a full item-analysis table from which three consecutive questions (difficulty index, discrimination index, and item judgement) were asked using the upper/lower 27% groups.
It also owns the most repeated "concept-identification" items in this exam family: which is NOT a projective technique, the order of the affective domain, norm- vs criterion-referenced interpretation, and sociometry.
Chapters 1 (foundations) and 3 (statistics) complete the measurement block.