S3 Methods for Computing Item Fit
This S3 method computes some selected item fit statistic.
IRT.itemfit(object, ...) ## S3 method for class 'din' IRT.itemfit(object, method="RMSEA", ...) ## S3 method for class 'gdina' IRT.itemfit(object, method="RMSEA", ...) ## S3 method for class 'gdm' IRT.itemfit(object, method="RMSEA", ...) ## S3 method for class 'reglca' IRT.itemfit(object, method="RMSEA", ...) ## S3 method for class 'slca' IRT.itemfit(object, method="RMSEA", ...)
Vector or data frame with item fit statistics.
For extracting the individual likelihood or posterior see
IRT.likelihood or IRT.posterior.
## Not run: ############################################################################# # EXAMPLE 1: DINA model item fit ############################################################################# data(sim.dina, package="CDM") data(sim.qmatrix, package="CDM") # estimate model mod1 <- CDM::din( sim.dina, q.matrix=sim.qmatrix) # compute item fit IRT.itemfit( mod1 ) ## End(Not run)
Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.