0.603 160 0.882 1.000 0.882 0.882 320 0.988 1.000 0.988 0.988 RMSE PF 0.9453 0.5599 0.3715 0.3520 0.9452 0.4523 0.2634 0.2401 0.6401 0.4359 0.1761 0.1696 0.4043 0.2083 0.1326 0.1195 Notes: The correct selection frequencies are for the estimated factor groups, which is Step 2 of the IPC procedure....