This Table, which must be selected explicitly with TFILE=, or as a subtable with "Request Subtable" on the "Output Tables" menu, shows an estimated item calibration for all possible rates of success by persons, i.e., the item measure corresponding to every observable proportion-correct-value or item marginal raw score for the entire sample. To select this Table, use "Request subtables" in the Output Tables menu,

 

Output Tables

Request Subtables

20.3

OK

 

or enter into your control file:

TFILE=*

20.3

*

 

                  TABLE OF ITEM MEASURES ON COMPLETE SAMPLE                 

FOR GROUPING "0", MODEL "R", ACT    NUMBER:     1  WATCH BIRDS

+--------------------------------------------------------------------------+

| SCORE  MEASURE    S.E. | SCORE  MEASURE    S.E. | SCORE  MEASURE    S.E. |

|------------------------+------------------------+------------------------|

|     0     8.71E   1.81 |    50     1.91     .22 |   100     -.51     .22 |

|     1     7.47    1.02 |    51     1.86     .22 |   101     -.56     .22 |

|     2     6.72     .74 |    52     1.82     .22 |   102     -.61     .22 |

|     3     6.26     .62 |    53     1.77     .22 |   103     -.66     .23 |

+--------------------------------------------------------------------------+

 

SCORE raw score on this item of a complete sample containing all calibrated persons.

MEASURE measure corresponding to score.

S.E.  standard error of the measure.

The statistical information is (USCALE/S.E.)²

 

If an item is not taken by all persons or persons are weighted, then that item is stratified with the measure on the complete sample nearest the estimated measure, regardless of the observed score.