Table 3.

K ₋₁-class, K₀-class, and K₊₁-class solutions under true 5-class model for entropy-based criterion

Solution		(K −1-class) 4-class Solution									(K0-class) 5-class Solution									(K +1-class) 6-class Solution
Items		6-Item			10-Item			15-Item			6-Item			10-Item			15-Item			6-Item			10-Item			15-Item
d	n	250	500	1000	250	500	1000	250	500	1000	250	500	1000	250	500	1000	250	500	1000	250	500	1000	250	500	1000	250	500	1000
.2	En.	.15	.23	.25	.16	.23	.26	.17	.25	.24	.23	.26	.29	.25	.25	.29	.22	.27	.31	.61	.49	.45	.58	.50	.44	.60	.46	.38
.5	En.	.18	.30	.34	.31	.32	.32	.28	.18	.24	.27	.26	.30	.24	.27	.28	.23	.31	.30	.54	.42	.35	.44	.40	.39	.47	.50	.44
.8	En.	.24	.35	.47	.59	.90	.99	.94	.99	.99	.28	.32	.28	.24	.07	.00	.01	0	0	.47	.32	.24	.16	.02	0	.04	.00	.00
1.5	En.	.44	.25	.11	.01	0	0	.00	0	0	.27	.44	.56	.73	.75	.76	.83	.87	.90	.28	.30	.32	.25	.24	.23	.15	.12	.09

Note: ‘En.’ for entropy. The values were truncated to two decimal points.