Classical Test Theory (CTT) Analysis


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Documentation for package ‘classicaltest’ version 0.7.5

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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)
ctsem.split 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
splithalf Reliability measures
stcov Population and sample (co)variance