Open AccessCONFIDENCE ENVELOPES FOR ITEM RESPONSE THEORY
Author(s) -
Thissen David,
Wainer Howard
Publication year - 1983
Publication title -
ets research report series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.235
H-Index - 5
ISSN - 2330-8516
DOI - 10.1002/j.2330-8516.1983.tb00025.x
Subject(s) - confidence interval , envelope (radar) , statistics , logistic regression , confidence distribution , line (geometry) , item response theory , confidence region , mathematics , logistic function , econometrics , computer science , psychometrics , geometry , telecommunications , radar
A statistical method is described and illustrated which provides confidence envelopes around item response functions. Examples of 95% confidence envelopes for the one‐, two‐, and three‐parameter logistic response models are given. In addition, we describe, N‐line plots, which show the genesis of the envelope as well as the density of lines in the confidence region. These too are illustrated for the one‐, two‐, and three‐parameter logistic models.