TABLE 3.

Fit of the models with two to seven classes.

Number of classes	Number of free parameters	Log-likelihood	AIC	BIC
2	55	−3,787.38	7,684.75	7,851.43
3	89	−3,499.31	7,176.63	7,446.33
4	127	−3,478.22	7,210.45	7,595.31
5	169	−3,195.29	6,728.57	7,240.71
6	215	−3,153.34	6,737.80	7,389.34
7	265	−3,071.76	6,673.51	7,476.58

AIC stands for Akaike information criterion, and BIC stands for Bayesian information criterion.