ITEM ANALYSIS Default.myproject.EXAM3 February 11, 2010 19:59:55 ================================================================================ Item-Total Correlation Item Option (Score) Difficulty S.D. Pt. Bis. Bis. --------- --------------- ---------- ---------- ---------- ---------- item1 Overall 0.3400 0.4742 0.3831 0.4953 0.0(0.0) 0.6600 0.4742 -0.4794 -0.6198 1.0(1.0) 0.3400 0.4742 0.3831 0.4953 item2 Overall 0.7160 0.4514 0.4486 0.5969 0.0(0.0) 0.2820 0.4504 -0.5353 -0.7130 1.0(1.0) 0.7160 0.4514 0.4486 0.5969 item3 Overall 0.6040 0.4896 0.4326 0.5490 0.0(0.0) 0.3800 0.4859 -0.5291 -0.6745 1.0(1.0) 0.6040 0.4896 0.4326 0.5490 item4 Overall 0.5760 0.4947 0.3145 0.3968 0.0(0.0) 0.4200 0.4941 -0.4250 -0.5367 1.0(1.0) 0.5760 0.4947 0.3145 0.3968 item5 Overall 0.2100 0.4077 0.3128 0.4420 0.0(0.0) 0.7780 0.4160 -0.3964 -0.5536 1.0(1.0) 0.2100 0.4077 0.3128 0.4420 item6 Overall 0.4480 0.4978 0.3854 0.4846 0.0(0.0) 0.5420 0.4987 -0.4896 -0.6148 1.0(1.0) 0.4480 0.4978 0.3854 0.4846 item7 Overall 0.6720 0.4700 0.2450 0.3184 0.0(0.0) 0.3040 0.4604 -0.3584 -0.4713 1.0(1.0) 0.6720 0.4700 0.2450 0.3184 item8 Overall 0.7360 0.4412 0.3752 0.5059 0.0(0.0) 0.2580 0.4380 -0.4766 -0.6454 1.0(1.0) 0.7360 0.4412 0.3752 0.5059 item9 Overall 0.2560 0.4369 0.1411 0.1913 0.0(0.0) 0.7340 0.4423 -0.2404 -0.3237 1.0(1.0) 0.2560 0.4369 0.1411 0.1913 item10 Overall 0.4580 0.4987 0.3544 0.4451 0.0(0.0) 0.5360 0.4992 -0.4654 -0.5842 1.0(1.0) 0.4580 0.4987 0.3544 0.4451 item11 Overall 0.5120 0.5004 0.1530 0.1918 0.0(0.0) 0.4840 0.5002 -0.2728 -0.3420 1.0(1.0) 0.5120 0.5004 0.1530 0.1918 item12 Overall 0.2380 0.4263 0.2777 0.3821 0.0(0.0) 0.7400 0.4391 -0.3510 -0.4747 1.0(1.0) 0.2380 0.4263 0.2777 0.3821 item13 Overall 0.3260 0.4692 0.1505 0.1957 0.0(0.0) 0.6560 0.4755 -0.2562 -0.3307 1.0(1.0) 0.3260 0.4692 0.1505 0.1957 item14 Overall 0.4040 0.4912 0.0835 0.1058 0.0(0.0) 0.5800 0.4941 -0.2143 -0.2706 1.0(1.0) 0.4040 0.4912 0.0835 0.1058 item15 Overall 0.5300 0.4996 0.1092 0.1370 0.0(0.0) 0.4560 0.4986 -0.2388 -0.3000 1.0(1.0) 0.5300 0.4996 0.1092 0.1370 item16 Overall 0.4080 0.4920 0.3793 0.4801 0.0(0.0) 0.5700 0.4956 -0.4665 -0.5880 1.0(1.0) 0.4080 0.4920 0.3793 0.4801 item17 Overall 0.2820 0.4504 0.3961 0.5277 0.0(0.0) 0.7040 0.4569 -0.4646 -0.6138 1.0(1.0) 0.2820 0.4504 0.3961 0.5277 item18 Overall 0.3620 0.4811 0.2199 0.2819 0.0(0.0) 0.6200 0.4859 -0.3189 -0.4066 1.0(1.0) 0.3620 0.4811 0.2199 0.2819 item19 Overall 0.4900 0.5004 0.3856 0.4834 0.0(0.0) 0.4980 0.5005 -0.4855 -0.6084 1.0(1.0) 0.4900 0.5004 0.3856 0.4834 item20 Overall 0.5820 0.4937 0.4184 0.5285 0.0(0.0) 0.4080 0.4920 -0.5133 -0.6497 1.0(1.0) 0.5820 0.4937 0.4184 0.5285 item21 Overall 1.9600 1.3152 0.6755 0.6755 0.0(0.0) 0.1620 0.3688 -0.5098 -0.7658 1.0(1.0) 0.2000 0.4004 -0.3614 -0.5164 2.0(2.0) 0.2440 0.4299 -0.0447 -0.0612 3.0(3.0) 0.2320 0.4225 0.2593 0.3587 4.0(4.0) 0.1440 0.3514 0.4847 0.7501 item22 Overall 1.2060 1.4169 0.6171 0.6171 0.0(0.0) 0.4380 0.4966 -0.6011 -0.7568 1.0(1.0) 0.2100 0.4077 -0.1287 -0.1819 2.0(2.0) 0.1180 0.3229 0.1186 0.1935 3.0(3.0) 0.0880 0.2836 0.2776 0.4924 4.0(4.0) 0.1240 0.3299 0.4896 0.7884 item23 Overall 2.0900 1.2889 0.5413 0.5413 0.0(0.0) 0.1020 0.3030 -0.3933 -0.6685 1.0(1.0) 0.1820 0.3862 -0.3802 -0.5551 2.0(2.0) 0.3120 0.4638 -0.1393 -0.1825 3.0(3.0) 0.1800 0.3846 0.2006 0.2937 4.0(4.0) 0.1860 0.3895 0.4498 0.6535 item24 Overall 1.7220 1.3237 0.6417 0.6417 0.0(0.0) 0.2040 0.4034 -0.5294 -0.7531 1.0(1.0) 0.1760 0.3812 -0.2921 -0.4299 2.0(2.0) 0.2660 0.4423 0.0560 0.0754 3.0(3.0) 0.1940 0.3958 0.2491 0.3585 4.0(4.0) 0.1080 0.3107 0.4666 0.7803 item25 Overall 1.2780 1.1898 0.6282 0.6282 0.0(0.0) 0.2700 0.4444 -0.5568 -0.7476 1.0(1.0) 0.3180 0.4662 -0.1869 -0.2440 2.0(2.0) 0.1880 0.3911 0.1391 0.2016 3.0(3.0) 0.1200 0.3253 0.3707 0.6022 4.0(4.0) 0.0560 0.2302 0.3755 0.7652 TEST LEVEL STATISTICS ========================================== Number of Items = 25 Number of Examinees = 500 Min = 2.0000 Max = 37.0000 Mean = 17.4060 Median = 17.0000 Standard Deviation = 8.0011 Interquartile Range = 12.0000 KR21 = 0.9556 ------------------------------------------ RELIABILIY ANALYSIS =========================================================================== Method Estimate 95% Conf. Int. SEM --------------------------------------------------------------------------- Guttman's Lambda_2 0.8616 (0.8435, 0.8785) 2.9767 Cronbach's Alpha 0.8291 (0.8068, 0.8500) 3.3074 Feldt-Gilmer 0.8658 (0.8482, 0.8822) 2.9311 Feldt-Brennan 0.8637 (0.8458, 0.8803) 2.9543 Raju's Beta 0.8291 (0.8068, 0.8500) 3.3074 --------------------------------------------------------------------------- RELIABILIY IF ITEM DELTED ================================================================= Item Lambda_2 Alpha F-G F-B Raju ----------------------------------------------------------------- item1 0.8577 0.8237 0.8621 0.8597 0.8237 item2 0.8564 0.8223 0.8607 0.8583 0.8223 item3 0.8566 0.8223 0.8611 0.8587 0.8223 item4 0.8591 0.8254 0.8635 0.8613 0.8254 item5 0.8591 0.8259 0.8635 0.8612 0.8259 item6 0.8575 0.8235 0.8619 0.8596 0.8235 item7 0.8605 0.8273 0.8652 0.8629 0.8273 item8 0.8579 0.8242 0.8624 0.8600 0.8242 item9 0.8620 0.8298 0.8663 0.8644 0.8298 item10 0.8583 0.8243 0.8629 0.8605 0.8243 item11 0.8623 0.8298 0.8667 0.8647 0.8298 item12 0.8597 0.8266 0.8641 0.8619 0.8266 item13 0.8621 0.8297 0.8665 0.8645 0.8297 item14 0.8635 0.8315 0.8676 0.8659 0.8315 item15 0.8631 0.8309 0.8673 0.8655 0.8309 item16 0.8578 0.8237 0.8624 0.8599 0.8237 item17 0.8575 0.8236 0.8620 0.8596 0.8236 item18 0.8609 0.8279 0.8652 0.8632 0.8279 item19 0.8576 0.8234 0.8620 0.8597 0.8234 item20 0.8568 0.8226 0.8612 0.8589 0.8226 item21 0.8395 0.8058 0.8435 0.8416 0.8058 item22 0.8435 0.8113 0.8489 0.8460 0.8113 item23 0.8509 0.8159 0.8565 0.8534 0.8159 item24 0.8410 0.8085 0.8464 0.8440 0.8085 item25 0.8422 0.8090 0.8479 0.8456 0.8090 ----------------------------------------------------------------- Elapsed time: 0 secs, 281 msecs