ERIC Number: EJ461969
Record Type: Journal
Publication Date: 1992
Reference Count: N/A
Cluster Analysis of Angular Data in Applications of Multidimensional Item-Response Theory.
Miller, Timothy R.; Hirsch, Thomas M.
Applied Measurement in Education, v5 n3 p193-211 1992
A procedure for interpreting multiple-discrimination indices from a multidimensional item-response theory analysis is described and demonstrated with responses of 1,635 high school students to a multiple-choice test. The procedure consists of converting discrimination parameter estimates to direction cosines and analyzing the angular distances between item vectors. (SLD)
Publication Type: Reports - Evaluative; Journal Articles
Education Level: N/A
Authoring Institution: N/A