Table 26.2 Item statistics graphically |
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A A |
Controlled by USCALE=, UMEAN=, UDECIM=, LOCAL=, FITLOW=, FITHIGH=, MNSQ=
Specify CHART=YES to produce Tables like this.
With MNSQ=Yes:
PUPIL FIT GRAPH: OUTFIT ORDER
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|ENTRY| MEASURE | INFIT MEAN-SQUARE | OUTFIT MEAN-SQUARE | |
|NUMBR| - + |0 0.7 1 1.3 2|0 0.7 1 1.3 2| PUPIL |
|-----+---------+---------------------+---------------------+----------------------|
| 72|* | : . : * |A : . : *| JACKSON, SOLOMON |
| 47| * | : . *: |J : . : * | VAN DAM, ANDY |
| 53|* | : *. : |K : . : * | SABOL, ANDREW |
| 32| * | *: . : |w * . : | ROSSNER, JACK |
| 21| * | * : . : |a * : . : | EISEN, NORM L. |
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The fit information is shown in graphical format to aid the eye in identifying patterns and outliers. The fit bars are positioned by FITLOW= and FITHIGH=. They may also be repositioned using TFILE=.
With MNSQ=No:, the ZSTD (t standardized) statistics are reported:
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|ENTRY | MEASURE |INFIT t standardized |OUTFIT t standardized| |
|NUMBER| - + |-3 -2 -1 0 1 2 3 |-3 -2 -1 0 1 2 3 | TAPS |
|------+---------+---------------------+---------------------+---------------|
| 18| E| : . : | : . : | 4-1-3-4-2-1-4 |
| 15| * | : *. : | : * : | 1-3-2-4-1-3 |
| 14| * | : . * : | : * : | 1-4-2-3-4-1 |
| 12| * | : .* : | : * : | 1-3-2-4-3 |
| 13| * | : * . : | : * . : | 1-4-3-2-4 |
| 11| * | : * : | : *. : | 1-3-1-2-4 |
| 10| * | : * : | : * : | 2-4-3-1 |
| 7| * | : . * : | : .* : | 1-4-3-2 |
| 4| * | : * : | : * : | 1-3-4 |
| 1|E | : . : | : . : | Cube 1, then 4|
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