Table 2.
Average RMSE Values and Average Correlations for the Parameters of the Items and the Average Execution Time, in Seconds.
M2PL-Q models | N | RMSE |
Correlation |
Time | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Full | 500 | 2,353 | ||||||||
1,000 | 6,305 | |||||||||
Bifac | 500 | 985 | ||||||||
1,000 | 3,012 | |||||||||
Custom | 500 | 662 | ||||||||
1,000 | 1,847 |
Note. M2PL-Q = multidimensional two-parameter logistic model with a Q-matrix; RMSE = square root of the mean square error.