PersonMisfit | R Documentation |
This function counts the number of persons who do not fit the Rasch model. More specifically, it returns the proportion and frequency of persons - or more generally cases - who exceed a Chi-square based Z-value of 1.96 (suggesting a statistically significant deviation from the predicted response pattern).
## S3 method for class 'ppar'
PersonMisfit(object)
object |
Object of class |
Returns the proportion and absolute number of persons who do not fit the Rasch model (Z-values > 1.96).
PersonMisfit
returns an object of class MisfittingPersons
containing:
PersonMisfit |
the proportion of misfitting persons, |
count.misfit.Z |
the frequency of misfitting person, |
total.persons |
the number of persons for whom a fit value was estimated. |
Adrian Bruegger
rm1 <- RM(raschdat1)
pers <- person.parameter(rm1)
pmfit <- PersonMisfit(pers)
pmfit
summary(pmfit)
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