alphatest               Reliability measures
classicaltest           Classical test theory item and person
                        statistics
correct                 Scoring correct/incorrect answers
ctitem                  Classical test theory item statistics
ctperson                Classical test theory person statistics
ctsem.alpha             Standard error of measurement (SEM)
dichodata               Simulated multiple choice data with 1000 cases,
                        and 20 items
dichokey                Keys for dichodata
dichotomize             Dichotomize data
discrimination          Item discrimination
distractors             Distractor statistics
itemmean                Item mean scores
partialdata             Simulated multiple choice data with 1000 cases,
                        and 20 items and partial credits
partialkey              Keys for partialdata
pointbiserial           Point-biserial correlation
polydata                Simulated polytomous items data with 1000
                        cases, and 20 items
stcov                   Population and sample (co)variance
