Empirical Investigation of the Stability of IRT Item-Parameters Estimation
iojesCilt 2013/5, Sayı 2
This study examined the effect of various sample sizes (200, 500, 1000, 5000, 10000, and 20000) and test lengths (15, 30, and 60) on the accuracy of item response theory item- parameters estimation using real test data. Estimates of item …