Generate Simulated Data for IRT-Enabled Exams
Creates linkage plan
Fill matrix of true.items with values from a custom linkage plan
Fill matrix of true.items with values for a random linkage plan
Generate True Ability Parameters
Simulate exam test answers
Generate item bank for NEAT with external anchor items
Generate item bank for NEAT with internal anchor items
Generate Item Parameter Values
Generate true item parameters for NEAT design
Simulates true examinee skills per form
Probability of Getting an Item Correct
Generates binary test data based on Item Response Theory using the two-parameter logistic model (Lord, 1980 <doi:10.4324/9780203056615>). Useful functions for test equating are included, e.g. functions for generating internal and external common items between test forms and a function to create a linkage plans between those forms. Ancillary functions for generating true item and person parameters as well as for calculating the probability of a person correctly answering an item are also included.