Table 30.7 Item measure profiles for classes of persons

Table 30.7 shows the item difficulty and summary scores for each person classification selected by DIF=

 

 

 

TABLE 30.7 LIKING FOR SCIENCE (Wright & Masters  ZOU211WS.TXT  Apr 30 2017 13: 3

INPUT: 75 KID  25 ACT  REPORTED: 75 KID  25 ACT  3 CATS          WINSTEPS 3.93.0

--------------------------------------------------------------------------------

 

DIF class specification is: DIF=@GENDER

-----------------------------------------------------------------------------------------------------------------------------------

| * ALL KID ON ACT            | F KID CLASS                 | M KID CLASS                 | ACT                                   |

| COUNT T.SCORE MEASURE  S.E. | COUNT T.SCORE MEASURE  S.E. | COUNT T.SCORE MEASURE  S.E. | ENTRY LABEL                           |

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

|    75     109    -.40   .21 |    18      29    -.48   .49 |    57      80    -.40   .23 |     1 Watch birds                     |

|    75     116    -.71   .23 |    18      29    -.48   .49 |    57      87    -.76   .24 |     2 Read books on animals           |

 

same with BOXSHOW=No, useful for pasting into Excel:

 

 * ALL KID ON ACT              F KID CLASS                   M KID CLASS                   ACT

  COUNT T.SCORE MEASURE  S.E.   COUNT T.SCORE MEASURE  S.E.   COUNT T.SCORE MEASURE  S.E.   ENTRY LABEL

 

     75     109    -.40   .21      18      29    -.48   .49      57      80    -.40   .23       1 Watch birds

     75     116    -.71   .23      18      29    -.48   .49      57      87    -.76   .24       2 Read books on animals

 

 

Column

Meaning

COUNT

Count of non-missing responses to this item by this person classification group.

T.SCORE

Total score  on this item by this person classification group.

MEASURE

Item difficulty for this person group = overall item difficulty + item DIF for the person group

S.E.

S.E. of the MEASURE

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