TABLE 3.

Absolute bias and root mean squared difference for WLE, TWLE, and IWLE at 3 different levels of growth on 20d+10p.

20d+10p	Methods
N = 1000	IWLE		WLE		TWLE
θ2	Abs.Bias	RMSD	Abs.Bias	RMSD	Abs.Bias	RMSD
1	0.4219	1.9411	1.0146	3.7642	1.0438	3.7842
1	0.2559	1.5026	0.4351	2.5015	0.4801	2.5460
1	0.0907	1.0243	0.1419	1.4468	0.1536	1.4836
1	0.0215	0.6990	0.0296	0.6428	0.0399	0.7196
0.8	0.0145	0.6201	0.0050	0.5732	0.0225	0.6349
0.8	0.0078	0.5947	0.0071	0.5492	0.0101	0.6095
0.8	0.0188	0.5555	0.0144	0.5204	0.0194	0.5697
0.8	0.0055	0.5402	0.0073	0.4952	0.0075	0.5518
0.8	0.0054	0.5365	0.0042	0.5032	0.0100	0.5435
0.8	0.0283	0.5380	0.0236	0.4971	0.0276	0.5439
0.8	0.0056	0.5670	0.0023	0.5213	0.0059	0.5761
0.8	0.0301	0.6168	0.0197	0.5684	0.0330	0.6224
0.8	0.0726	0.7236	0.0504	0.7475	0.0779	0.8220
0.6	0.0782	0.9579	0.1165	1.2499	0.1224	1.3136
0.6	0.2395	1.4137	0.4164	2.3609	0.4538	2.3896
0.6	0.3946	2.2477	0.9091	4.3898	0.9462	4.3887
0.6	0.7397	2.8244	1.7386	5.9953	1.7629	5.9489

20d + 10p means the 30-item test with 20 dichotomous items and 10 polytomous items.