IRT.itemfit {CDM} | R Documentation |
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", ...)
object |
|
method |
Method for computing item fit statistic. Until now,
only |
... |
More arguments to be passed. |
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)