Wrong or Right Choice Test
------------------------------- K I D M A P--------------------------------
ability:-0.89 logits correct items:12
% score: 32.43 total items:37
SE : 0.39 missing data:0
Infit MNSQ: 0.83 Outfit MNSQ:0.73 (.6 < Outfit<1.4)
Infit STND:0.11 Outfit STND:=-0.06(within +/- 2.58)
sum(z-sqrt) : 0.75 t STND:-1.14 (within +/- 2)
Test Reliability = 0.8 Person Reliability =0.91
delta--------Harder Achieved ----------------------Harder Not Achieved -------prob.
2.3 | | 37(2) 0.04
2.2 | |
2.1 | |
2 | |
1.9 | |
1.8 | | 16(2) 0.06
1.7 | |
1.6 | |
1.5 | | 9(2) 27(2) 0.08
1.4 | | 17(4) 0.09
1.3 | |
1.2 | |
1.1 | | 28(4) 0.12
1 | |
0.9 | |
0.8 | | 12(2) 0.16
0.7 | | 29(3) 34(2) 19(3) 0.17
0.6 10* | | 0.18
0.5 | | 1(2) 21(2) 22(3) 0.2
0.4 | |
0.3 | | 15(2) 6(2) 0.23
0.2 36 | | 0.25
0.1 | |
0 33 | | 0.29
-0.1 | | 11(3) 32(4) 8(3) 0.31
-0.2 | | 31(0) 0.33
-0.3 18 | | 0.36
-0.4 | |
.........................................
-0.5 5 14 | | 24(2) 26(2) 23(2) 0.4
-0.6 | | 30(3) 0.43
-0.7 | | 25(2) 0.45
-0.8 35 | | 0.48
-0.9 |XXX|
-1 | | 20(4) 0.53
-1.1 | |
-1.2 | |
..........................................
-1.3 | |
-1.4 7 | | 0.62
-1.5 | |
-1.6 | |
-1.7 13 | | 0.69
-1.8 | |
-1.9 | |
-2 | |
-2.1 | |
-2.2 | |
-2.3 | |
-2.4 2 4 | | 0.82
-2.5 | |
-2.6 3 | | 0.85
-2.7 | |
------------Easier Achieved ----------------------Easier Not Achieved ----------
note:---indicates ranges of +/- one standard erro from person estimated ability, shown as XXX
* = zscore out of range of +/- 2, +/- 2.58 for ^,items limited to less than 100
sum(z-sqrt),roughly equal to outfit MNSQ, was calculate by best test design on page 79
Infit STND & Outfit STND referedt to Sheu, C.-F.*, Chen, C.-T., Su, Y.-H., & Wang, W.-C. (2005).
Using SAS PROC NLMIXED to fit item response theory models. Behavior Research Methods, 37, 202-218.
refer to http://www.eddata.com/resources/publications/EDS_Rasch_Demo.xls
You are grouped into levle 3
person SEPARATION index= 2.02, strata=3 refered to 3.725,1.325 logits