GDINA (version 2.0.8)

modelfit: Model fit statistics

Description

Calculate various model-data fit statistics

Usage

modelfit(GDINA.obj, CI = 0.9, ...)

Arguments

GDINA.obj

An estimated model object of class GDINA

CI

numeric value from 0 to 1 indicating the range of the confidence interval for RMSEA. Default returns the 90% interval.

...

arguments passed to the function

Details

Various model-data fit statistics including M2 statistic for G-DINA model with dichotmous responses (Liu, Tian, & Xin, 2016) and for sequential G-DINA model with graded responses (Ma, under review). It also calculates SRMSR and RMSEA2.

References

Ma, W. (under review). Evaluating model data fit using limited information statistics for the sequential G-DINA model.

Maydeu-Olivares, A. (2013). Goodness-of-Fit Assessment of Item Response Theory Models. Measurement, 11, 71-101.

Liu, Y., Tian, W., & Xin, T. (2016). An Application of M2 Statistic to Evaluate the Fit of Cognitive Diagnostic Models. Journal of Educational and Behavioral Statistics, 41, 3-26.

Examples

# NOT RUN {
dat <- sim10GDINA$simdat
Q <- sim10GDINA$simQ
mod1 <- GDINA(dat = dat, Q = Q, model = "DINA")
modelfit(mod1)
# }