NotesFAQContact Us
Collection
Advanced
Search Tips
Source
Publication Type
Guides - Non-Classroom1
Reports - Research1
Education Level
Audience
Location
Laws, Policies, & Programs
Assessments and Surveys
New Jersey College Basic…1
What Works Clearinghouse Rating
Showing one result Save | Export
Smith, Richard M. – 1981
In all latent trait models there is an equation which describes the probabilistic outcome of the interaction of a person with a known ability and an item with a known difficulty. This modeled outcome can be compared to the observed outcome, and the residuals can be summed over the items to assess the fit of the person to the model. Various…
Descriptors: Algebra, Error of Measurement, Goodness of Fit, Guessing (Tests)