IRT.itemfit.RdThis S3 method computes some selected item fit statistic.
IRT.itemfit(object, ...) # S3 method for din IRT.itemfit(object, method="RMSEA", ...) # S3 method for gdina IRT.itemfit(object, method="RMSEA", ...) # S3 method for gdm IRT.itemfit(object, method="RMSEA", ...) # S3 method for reglca IRT.itemfit(object, method="RMSEA", ...) # S3 method for 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.
if (FALSE) { ############################################################################# # 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 ) }