An IERI – International Educational Research Institute Journal
 | LR | HLR | Testlet | Multilevel testlet | |
---|---|---|---|---|---|
Number | |||||
 Item 1 | 0.014 | 0.014 | 0.005 | 0.012 | |
 Item 2 | −0.006 | −0.007 | −0.002 | −0.007 | |
 Item 3 | 0.000 | −0.001 | −0.002 | −0.004 | |
 Item 4 | −0.006 | −0.006 | 0.000 | −0.010 | |
 Item 5 | 0.006 | 0.007 | 0.002 | 0.008 | |
 Item 6 | 0.005 | 0.005 | 0.002 | 0.003 | |
 Item 7 | −0.012 | −0.012 | −0.005 | −0.014 | |
 Item 8 | −0.007 | −0.007 | −0.004 | −0.003 | |
Geometry | |||||
 Item 1 | −0.005 | −0.006 | −0.011 | −0.013 | |
 Item 2 | −0.010 | −0.011 | −0.007 | −0.019 | |
 Item 3 | 0.002 | 0.002 | 0.002 | −0.005 | |
 Item 4 | 0.007 | 0.008 | 0.001 | −0.003 | |
Data and chance | |||||
 Item 1 | 0.000 | 0.000 | −0.001 | 0.000 | |
 Item 2 | 0.017 | 0.017 | 0.005 | 0.009 | |
 Item 3 | −0.011 | −0.012 | −0.007 | −0.017 | |
 Item 4 | 0.003 | 0.040 | 0.000 | 0.002 | |
Algebra | |||||
 Item 1 | 0.006 | 0.007 | 0.002 | 0.000 | |
 Item 2 | 0.004 | 0.004 | 0.001 | −0.004 | |
 Item 3 | 0.003 | 0.003 | 0.002 | −0.004 | |
 Item 4 | 0.000 | 0.000 | −0.003 | −0.003 | |
 Item 5 | −0.004 | −0.005 | 0.000 | −0.009 |