ITEM ANALYSIS Default.myproject.DIF1 February 11, 2010 11:22:20 ================================================================================ Item-Total Correlation Item Option (Score) Difficulty S.D. Pt. Bis. Bis. --------- --------------- ---------- ---------- ---------- ---------- V2 Overall 0.5555 0.4970 0.3726 0.4686 0.0(0.0) 0.4445 0.4970 -0.4310 -0.5421 1.0(1.0) 0.5555 0.4970 0.3726 0.4686 V3 Overall 0.4190 0.4935 0.3992 0.5041 0.0(0.0) 0.5810 0.4935 -0.4557 -0.5755 1.0(1.0) 0.4190 0.4935 0.3992 0.5041 V4 Overall 0.6765 0.4679 0.3590 0.4675 0.0(0.0) 0.3235 0.4679 -0.4147 -0.5401 1.0(1.0) 0.6765 0.4679 0.3590 0.4675 V5 Overall 0.1500 0.3572 0.2910 0.4457 0.0(0.0) 0.8500 0.3572 -0.3362 -0.5148 1.0(1.0) 0.1500 0.3572 0.2910 0.4457 V6 Overall 0.6385 0.4806 0.3777 0.4843 0.0(0.0) 0.3615 0.4806 -0.4339 -0.5564 1.0(1.0) 0.6385 0.4806 0.3777 0.4843 V7 Overall 0.2065 0.4049 0.3264 0.4631 0.0(0.0) 0.7935 0.4049 -0.3762 -0.5336 1.0(1.0) 0.2065 0.4049 0.3264 0.4631 V8 Overall 0.3605 0.4803 0.3936 0.5049 0.0(0.0) 0.6395 0.4803 -0.4489 -0.5759 1.0(1.0) 0.3605 0.4803 0.3936 0.5049 V9 Overall 0.7655 0.4238 0.3444 0.4753 0.0(0.0) 0.2345 0.4238 -0.3956 -0.5461 1.0(1.0) 0.7655 0.4238 0.3444 0.4753 V10 Overall 0.8870 0.3167 0.2676 0.4419 0.0(0.0) 0.1130 0.3167 -0.3083 -0.5092 1.0(1.0) 0.8870 0.3167 0.2676 0.4419 V11 Overall 0.4455 0.4971 0.3672 0.4618 0.0(0.0) 0.5545 0.4971 -0.4259 -0.5356 1.0(1.0) 0.4455 0.4971 0.3672 0.4618 V12 Overall 0.5775 0.4941 0.3894 0.4914 0.0(0.0) 0.4225 0.4941 -0.4465 -0.5635 1.0(1.0) 0.5775 0.4941 0.3894 0.4914 V13 Overall 0.7155 0.4513 0.3628 0.4825 0.0(0.0) 0.2845 0.4513 -0.4164 -0.5538 1.0(1.0) 0.7155 0.4513 0.3628 0.4825 V14 Overall 0.2455 0.4305 0.3455 0.4726 0.0(0.0) 0.7545 0.4305 -0.3975 -0.5437 1.0(1.0) 0.2455 0.4305 0.3455 0.4726 V15 Overall 0.4195 0.4936 0.3959 0.5000 0.0(0.0) 0.5805 0.4936 -0.4526 -0.5716 1.0(1.0) 0.4195 0.4936 0.3959 0.5000 V16 Overall 0.4830 0.4998 0.4189 0.5252 0.0(0.0) 0.5170 0.4998 -0.4750 -0.5955 1.0(1.0) 0.4830 0.4998 0.4189 0.5252 V17 Overall 0.4530 0.4979 0.4209 0.5289 0.0(0.0) 0.5470 0.4979 -0.4767 -0.5989 1.0(1.0) 0.4530 0.4979 0.4209 0.5289 V18 Overall 0.6155 0.4866 0.3754 0.4779 0.0(0.0) 0.3845 0.4866 -0.4324 -0.5506 1.0(1.0) 0.6155 0.4866 0.3754 0.4779 V19 Overall 0.8020 0.3986 0.3131 0.4484 0.0(0.0) 0.1980 0.3986 -0.3626 -0.5193 1.0(1.0) 0.8020 0.3986 0.3131 0.4484 V20 Overall 0.2145 0.4106 0.3220 0.4530 0.0(0.0) 0.7855 0.4106 -0.3726 -0.5241 1.0(1.0) 0.2145 0.4106 0.3220 0.4530 V21 Overall 0.6480 0.4777 0.3839 0.4940 0.0(0.0) 0.3520 0.4777 -0.4395 -0.5655 1.0(1.0) 0.6480 0.4777 0.3839 0.4940 V22 Overall 0.6460 0.4783 0.3703 0.4761 0.0(0.0) 0.3540 0.4783 -0.4267 -0.5486 1.0(1.0) 0.6460 0.4783 0.3703 0.4761 V23 Overall 0.8045 0.3967 0.3272 0.4699 0.0(0.0) 0.1955 0.3967 -0.3759 -0.5398 1.0(1.0) 0.8045 0.3967 0.3272 0.4699 V24 Overall 0.5120 0.5000 0.3626 0.4545 0.0(0.0) 0.4880 0.5000 -0.4219 -0.5288 1.0(1.0) 0.5120 0.5000 0.3626 0.4545 V25 Overall 0.2460 0.4308 0.3391 0.4635 0.0(0.0) 0.7540 0.4308 -0.3914 -0.5350 1.0(1.0) 0.2460 0.4308 0.3391 0.4635 V26 Overall 0.5575 0.4968 0.3900 0.4907 0.0(0.0) 0.4425 0.4968 -0.4474 -0.5629 1.0(1.0) 0.5575 0.4968 0.3900 0.4907 V27 Overall 0.7110 0.4534 0.3950 0.5239 0.0(0.0) 0.2890 0.4534 -0.4472 -0.5932 1.0(1.0) 0.7110 0.4534 0.3950 0.5239 V28 Overall 0.7855 0.4106 0.2998 0.4218 0.0(0.0) 0.2145 0.4106 -0.3513 -0.4941 1.0(1.0) 0.7855 0.4106 0.2998 0.4218 V29 Overall 0.1975 0.3982 0.3268 0.4682 0.0(0.0) 0.8025 0.3982 -0.3757 -0.5383 1.0(1.0) 0.1975 0.3982 0.3268 0.4682 V30 Overall 0.5960 0.4908 0.3956 0.5012 0.0(0.0) 0.4040 0.4908 -0.4520 -0.5727 1.0(1.0) 0.5960 0.4908 0.3956 0.5012 V31 Overall 0.3485 0.4766 0.3912 0.5040 0.0(0.0) 0.6515 0.4766 -0.4463 -0.5750 1.0(1.0) 0.3485 0.4766 0.3912 0.5040 V32 Overall 0.2525 0.4346 0.3745 0.5094 0.0(0.0) 0.7475 0.4346 -0.4257 -0.5789 1.0(1.0) 0.2525 0.4346 0.3745 0.5094 V33 Overall 0.4880 0.5000 0.3914 0.4906 0.0(0.0) 0.5120 0.5000 -0.4491 -0.5629 1.0(1.0) 0.4880 0.5000 0.3914 0.4906 V34 Overall 0.6610 0.4735 0.3844 0.4972 0.0(0.0) 0.3390 0.4735 -0.4395 -0.5684 1.0(1.0) 0.6610 0.4735 0.3844 0.4972 V35 Overall 0.2840 0.4510 0.3423 0.4555 0.0(0.0) 0.7160 0.4510 -0.3969 -0.5281 1.0(1.0) 0.2840 0.4510 0.3423 0.4555 V36 Overall 0.5705 0.4951 0.3735 0.4708 0.0(0.0) 0.4295 0.4951 -0.4316 -0.5440 1.0(1.0) 0.5705 0.4951 0.3735 0.4708 V37 Overall 0.3920 0.4883 0.3982 0.5060 0.0(0.0) 0.6080 0.4883 -0.4542 -0.5771 1.0(1.0) 0.3920 0.4883 0.3982 0.5060 V38 Overall 0.3910 0.4881 0.3714 0.4720 0.0(0.0) 0.6090 0.4881 -0.4288 -0.5450 1.0(1.0) 0.3910 0.4881 0.3714 0.4720 V39 Overall 0.7430 0.4371 0.3450 0.4676 0.0(0.0) 0.2570 0.4371 -0.3978 -0.5392 1.0(1.0) 0.7430 0.4371 0.3450 0.4676 V40 Overall 0.5010 0.5001 0.4183 0.5243 0.0(0.0) 0.4990 0.5001 -0.4744 -0.5946 1.0(1.0) 0.5010 0.5001 0.4183 0.5243 V41 Overall 0.5625 0.4962 0.3912 0.4926 0.0(0.0) 0.4375 0.4962 -0.4485 -0.5647 1.0(1.0) 0.5625 0.4962 0.3912 0.4926 V42 Overall 0.1525 0.3596 0.3121 0.4760 0.0(0.0) 0.8475 0.3596 -0.3569 -0.5442 1.0(1.0) 0.1525 0.3596 0.3121 0.4760 V43 Overall 0.5985 0.4903 0.3796 0.4811 0.0(0.0) 0.4015 0.4903 -0.4368 -0.5537 1.0(1.0) 0.5985 0.4903 0.3796 0.4811 V44 Overall 0.6270 0.4837 0.4060 0.5186 0.0(0.0) 0.3730 0.4837 -0.4610 -0.5889 1.0(1.0) 0.6270 0.4837 0.4060 0.5186 V45 Overall 0.6760 0.4681 0.3640 0.4739 0.0(0.0) 0.3240 0.4681 -0.4195 -0.5462 1.0(1.0) 0.6760 0.4681 0.3640 0.4739 V46 Overall 0.8410 0.3658 0.3116 0.4702 0.0(0.0) 0.1590 0.3658 -0.3571 -0.5389 1.0(1.0) 0.8410 0.3658 0.3116 0.4702 V47 Overall 0.7735 0.4187 0.3470 0.4825 0.0(0.0) 0.2265 0.4187 -0.3976 -0.5528 1.0(1.0) 0.7735 0.4187 0.3470 0.4825 V48 Overall 0.4910 0.5000 0.3770 0.4725 0.0(0.0) 0.5090 0.5000 -0.4355 -0.5459 1.0(1.0) 0.4910 0.5000 0.3770 0.4725 V49 Overall 0.3965 0.4893 0.3754 0.4765 0.0(0.0) 0.6035 0.4893 -0.4328 -0.5493 1.0(1.0) 0.3965 0.4893 0.3754 0.4765 V50 Overall 0.4460 0.4972 0.3629 0.4564 0.0(0.0) 0.5540 0.4972 -0.4219 -0.5305 1.0(1.0) 0.4460 0.4972 0.3629 0.4564 V51 Overall 0.6335 0.4820 0.3761 0.4814 0.0(0.0) 0.3665 0.4820 -0.4326 -0.5537 1.0(1.0) 0.6335 0.4820 0.3761 0.4814 V52 Overall 0.8615 0.3455 0.2713 0.4241 0.0(0.0) 0.1385 0.3455 -0.3156 -0.4933 1.0(1.0) 0.8615 0.3455 0.2713 0.4241 V53 Overall 0.1755 0.3805 0.3136 0.4619 0.0(0.0) 0.8245 0.3805 -0.3609 -0.5316 1.0(1.0) 0.1755 0.3805 0.3136 0.4619 V54 Overall 0.2875 0.4527 0.3404 0.4519 0.0(0.0) 0.7125 0.4527 -0.3953 -0.5248 1.0(1.0) 0.2875 0.4527 0.3404 0.4519 V55 Overall 0.4405 0.4966 0.3988 0.5019 0.0(0.0) 0.5595 0.4966 -0.4557 -0.5734 1.0(1.0) 0.4405 0.4966 0.3988 0.5019 V56 Overall 0.8095 0.3928 0.3434 0.4962 0.0(0.0) 0.1905 0.3928 -0.3910 -0.5650 1.0(1.0) 0.8095 0.3928 0.3434 0.4962 V57 Overall 0.7910 0.4067 0.3162 0.4473 0.0(0.0) 0.2090 0.4067 -0.3665 -0.5186 1.0(1.0) 0.7910 0.4067 0.3162 0.4473 V58 Overall 0.5370 0.4988 0.3937 0.4942 0.0(0.0) 0.4630 0.4988 -0.4511 -0.5662 1.0(1.0) 0.5370 0.4988 0.3937 0.4942 V59 Overall 0.3185 0.4660 0.3636 0.4747 0.0(0.0) 0.6815 0.4660 -0.4189 -0.5469 1.0(1.0) 0.3185 0.4660 0.3636 0.4747 V60 Overall 0.2000 0.4001 0.3164 0.4520 0.0(0.0) 0.8000 0.4001 -0.3659 -0.5228 1.0(1.0) 0.2000 0.4001 0.3164 0.4520 V61 Overall 0.4410 0.4966 0.3872 0.4873 0.0(0.0) 0.5590 0.4966 -0.4448 -0.5597 1.0(1.0) 0.4410 0.4966 0.3872 0.4873 V62 Overall 1.7715 1.1202 0.5871 0.5871 0.0(0.0) 0.2020 0.4016 -0.5315 -0.7577 1.0(1.0) 0.1615 0.3681 -0.2074 -0.3117 2.0(2.0) 0.2995 0.4582 0.0471 0.0621 3.0(3.0) 0.3370 0.4728 0.4741 0.6137 V63 Overall 1.3590 1.1449 0.6239 0.6239 0.0(0.0) 0.3090 0.4622 -0.5820 -0.7633 1.0(1.0) 0.2540 0.4354 -0.1150 -0.1562 2.0(2.0) 0.2060 0.4045 0.1747 0.2480 3.0(3.0) 0.2310 0.4216 0.4855 0.6723 V64 Overall 1.4570 1.0265 0.5836 0.5836 0.0(0.0) 0.2400 0.4272 -0.5434 -0.7465 1.0(1.0) 0.2255 0.4180 -0.1603 -0.2232 2.0(2.0) 0.3720 0.4835 0.2423 0.3096 3.0(3.0) 0.1625 0.3690 0.3725 0.5590 V65 Overall 1.8285 1.1453 0.6062 0.6062 0.0(0.0) 0.1860 0.3892 -0.5115 -0.7431 1.0(1.0) 0.1980 0.3986 -0.2714 -0.3886 2.0(2.0) 0.2175 0.4126 0.0150 0.0210 3.0(3.0) 0.3985 0.4897 0.5286 0.6706 V66 Overall 1.1725 1.0781 0.5982 0.5982 0.0(0.0) 0.3645 0.4814 -0.5544 -0.7102 1.0(1.0) 0.2435 0.4293 -0.1013 -0.1387 2.0(2.0) 0.2470 0.4314 0.2778 0.3794 3.0(3.0) 0.1450 0.3522 0.4180 0.6458 TEST LEVEL STATISTICS ========================================== Number of Items = 65 Number of Examinees = 2000 Min = 3.0000 Max = 73.0000 Mean = 38.6145 Median = 39.0000 Standard Deviation = 14.2646 Interquartile Range = 21.0000 KR21 = 0.9374 ------------------------------------------ RELIABILIY ANALYSIS =========================================================================== Method Estimate 95% Conf. Int. SEM --------------------------------------------------------------------------- Guttman's Lambda_2 0.9288 (0.9243, 0.9332) 3.8062 Cronbach's Alpha 0.9228 (0.9179, 0.9275) 3.9643 Feldt-Gilmer 0.9293 (0.9248, 0.9336) 3.7939 Feldt-Brennan 0.9293 (0.9248, 0.9336) 3.7928 Raju's Beta 0.9228 (0.9179, 0.9275) 3.9643 --------------------------------------------------------------------------- RELIABILIY IF ITEM DELTED ================================================================= Item Lambda_2 Alpha F-G F-B Raju ----------------------------------------------------------------- V2 0.9279 0.9217 0.9284 0.9284 0.9217 V3 0.9277 0.9215 0.9282 0.9283 0.9215 V4 0.9280 0.9218 0.9284 0.9285 0.9218 V5 0.9283 0.9222 0.9288 0.9288 0.9222 V6 0.9279 0.9217 0.9283 0.9284 0.9217 V7 0.9281 0.9220 0.9286 0.9287 0.9220 V8 0.9278 0.9216 0.9282 0.9283 0.9216 V9 0.9281 0.9219 0.9285 0.9286 0.9219 V10 0.9284 0.9223 0.9288 0.9289 0.9223 V11 0.9279 0.9217 0.9284 0.9284 0.9217 V12 0.9278 0.9216 0.9283 0.9283 0.9216 V13 0.9279 0.9218 0.9284 0.9285 0.9218 V14 0.9280 0.9219 0.9285 0.9286 0.9219 V15 0.9278 0.9215 0.9282 0.9283 0.9215 V16 0.9276 0.9214 0.9281 0.9281 0.9214 V17 0.9276 0.9214 0.9281 0.9281 0.9214 V18 0.9279 0.9217 0.9284 0.9284 0.9217 V19 0.9282 0.9221 0.9287 0.9287 0.9221 V20 0.9282 0.9220 0.9286 0.9287 0.9220 V21 0.9278 0.9216 0.9283 0.9283 0.9216 V22 0.9279 0.9217 0.9284 0.9284 0.9217 V23 0.9281 0.9220 0.9286 0.9286 0.9220 V24 0.9280 0.9218 0.9284 0.9285 0.9218 V25 0.9281 0.9219 0.9286 0.9286 0.9219 V26 0.9278 0.9216 0.9283 0.9283 0.9216 V27 0.9278 0.9216 0.9283 0.9283 0.9216 V28 0.9283 0.9222 0.9287 0.9288 0.9222 V29 0.9281 0.9220 0.9286 0.9287 0.9220 V30 0.9277 0.9216 0.9282 0.9283 0.9216 V31 0.9278 0.9216 0.9283 0.9283 0.9216 V32 0.9279 0.9217 0.9284 0.9284 0.9217 V33 0.9278 0.9216 0.9283 0.9283 0.9216 V34 0.9278 0.9216 0.9283 0.9283 0.9216 V35 0.9281 0.9219 0.9285 0.9286 0.9219 V36 0.9279 0.9217 0.9284 0.9284 0.9217 V37 0.9277 0.9215 0.9282 0.9283 0.9215 V38 0.9279 0.9217 0.9284 0.9284 0.9217 V39 0.9280 0.9219 0.9285 0.9286 0.9219 V40 0.9276 0.9214 0.9281 0.9281 0.9214 V41 0.9278 0.9216 0.9283 0.9283 0.9216 V42 0.9282 0.9221 0.9287 0.9287 0.9221 V43 0.9279 0.9217 0.9283 0.9284 0.9217 V44 0.9277 0.9215 0.9282 0.9282 0.9215 V45 0.9279 0.9218 0.9284 0.9285 0.9218 V46 0.9282 0.9221 0.9287 0.9287 0.9221 V47 0.9280 0.9219 0.9285 0.9286 0.9219 V48 0.9279 0.9217 0.9284 0.9284 0.9217 V49 0.9279 0.9217 0.9284 0.9284 0.9217 V50 0.9279 0.9218 0.9284 0.9285 0.9218 V51 0.9279 0.9217 0.9284 0.9284 0.9217 V52 0.9284 0.9223 0.9288 0.9289 0.9223 V53 0.9282 0.9221 0.9287 0.9287 0.9221 V54 0.9281 0.9219 0.9286 0.9286 0.9219 V55 0.9277 0.9215 0.9282 0.9283 0.9215 V56 0.9281 0.9219 0.9285 0.9286 0.9219 V57 0.9282 0.9221 0.9287 0.9287 0.9221 V58 0.9278 0.9216 0.9283 0.9283 0.9216 V59 0.9279 0.9218 0.9284 0.9285 0.9218 V60 0.9282 0.9221 0.9287 0.9287 0.9221 V61 0.9278 0.9216 0.9283 0.9283 0.9216 V62 0.9257 0.9203 0.9262 0.9262 0.9203 V63 0.9250 0.9198 0.9254 0.9255 0.9198 V64 0.9257 0.9201 0.9262 0.9263 0.9201 V65 0.9254 0.9201 0.9258 0.9258 0.9201 V66 0.9255 0.9200 0.9260 0.9260 0.9200 ----------------------------------------------------------------- Elapsed time: 1 secs, 996 msecs