386 BILOG 3.07 MAXIMUM LIKELIHOOD ITEM ANALYSIS AND TEST SCORING: LOGISTIC MODEL DISTRIBUTED BY SCIENTIFIC SOFTWARE, INC. 1525 E. 53RD STREET CHICAGO, ILINOIS 60615 (800) 247-6113, (312) 684-4979 PROGRAM COPYRIGHT HELD BY SCIENTIFIC SOFTWARE, INC. 1985-93 ALL RIGHTS RESERVED. 1 *** LOGISTIC MODEL ITEM ANALYSER *** *** PHASE 1 *** AGREEABLENESS CALIBRATION FOR IRT TUTORIAL. >COMMENT >GLOBAL DFN='AGR2_CAL.DAT', NIDW=4, NPARM=3, OFNAME='OMIT.KEY', SAVE; GLOBAL PARAMETERS ================= NUMBER OF SUBTESTS 1 CASE WEIGHTING NONE EMPLOYED ITEM RESPONSE MODEL 3 PARAMETER LOGISTIC NORMAL METRIC (I.E., D = 1.7) >SAVE SCO = 'AGR2_CAL.SCO', PARM = 'AGR2_CAL.PAR'; >LENGTH NITEMS=(10); SUBTEST LENGTHS: 10 >INPUT SAMPLE=99999; DATA INPUT SPECIFICATIONS ========================= NUMBER OF FORMAT CARDS 1 NUMBER OF ITEMS IN INPUT STREAM 10 NUMBER OF RESPONSE ALTERNATIVES 5 NUMBER OF SUBJECT ID CHARACTERS 4 SUBJECT DATA INPUT OPTION SINGLE-SUBJECT DATA, NO CASE WEIGHTS MAXIMUM SAMPLE SIZE FOR ITEM CALIBRATION 99999 ALL SUBJECTS INCLUDED IN RUN FORMAT CARD FOR INPUT IS (4A1,10A1) FILE ASSIGNMENT AND DISPOSITION =============================== [INPUT FILES] SUBJECT DATA INPUT FILE AGR2_CAL.DAT SINGLE-SUBJECT DATA, NO CASE WEIGHTS OMITTED-RESPONSE KEY FILE OMIT.KEY [OUTPUT FILES] ITEM PARAMETERS FILE AGR2_CAL.PAR SUBJECT SCALE-SCORE FILE AGR2_CAL.SCO [SCRATCH FILES] BILOG SYSTEM BINARY DATA FILE agr2_cal.MFL CALIBRATION BINARY DATA FILE agr2_cal.CFL ESTIMATED COVARIANCE FILE agr2_cal.VFL TEMPORARY FILE agr2_cal.T02 TEMPORARY FILE agr2_cal.T03 TEMPORARY FILE agr2_cal.T14 TEMPORARY FILE agr2_cal.T99 >TEST TNAME=AGR; OMIT KEY: 1 AGR OBSERVATION 1 WEIGHT: 1.0000 ID : 1001 SUBTEST 1 AGR TRIED RIGHT 10.000 7.000 ITEM 1 2 3 4 5 6 7 8 9 10 TRIED 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 RIGHT 1.0 1.0 1.0 1.0 1.0 0.0 0.0 1.0 0.0 1.0 OBSERVATION 2 WEIGHT: 1.0000 ID : 1003 SUBTEST 1 AGR TRIED RIGHT 10.000 10.000 ITEM 1 2 3 4 5 6 7 8 9 10 TRIED 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 RIGHT 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1500 OBSERVATIONS READ FROM FILE: AGR2_CAL.DAT 1500 OBSERVATIONS WRITTEN TO FILE: agr2_cal.MFL 1 CLASSICAL ITEM STATISTICS FOR SUBTEST AGR NUMBER NUMBER ITEM*TEST CORRELATION ITEM NAME TRIED RIGHT PERCENT LOGIT/1.7 PEARSON BISERIAL --------------------------------------------------------------------- 1 0001 1500.0 1158.0 0.772 0.72 0.535 0.742 2 0002 1500.0 991.0 0.661 0.39 0.421 0.545 3 0003 1500.0 1354.0 0.903 1.31 0.290 0.500 4 0004 1500.0 1187.0 0.791 0.78 0.518 0.733 5 0005 1500.0 970.0 0.647 0.36 0.566 0.728 6 0006 1500.0 1203.0 0.802 0.82 0.362 0.519 7 0007 1500.0 875.0 0.583 0.20 0.533 0.674 8 0008 1500.0 810.0 0.540 0.09 0.473 0.594 9 0009 1500.0 1022.0 0.681 0.45 0.415 0.542 10 0010 1500.0 869.0 0.579 0.19 0.426 0.538 --------------------------------------------------------------------- 1644 BYTES OF NUMERIAL WORKSPACE USED OUT OF 3600000 IN PHASE-1 960 BYTES OF CHARACTER WORKSPACE USED OUT OF 80000 IN PHASE-1