(controlled by T2SELECT=, MRANGE=, CATREF=)

 

Multiple-choice items

 

Table 2.5 shows the average measures of persons choosing wrong distractors (illustrated by one of the wrong distractors, "a") and the average measures or persons choosing a correct distractor (illustrated by one of the correct distractors, "d").

 

TABLE 2.5 OBSERVED AVERAGE MEASURES FOR STUDENTS (scored) (ILLUSTRATED BY AN OBSERVED CATEGORY)

-4    -3     -2     -1      0      1      2      3      4

|------+------+------+------+------+------+------+------|  NUM   TOPIC

|                                a                      d   55  al07  newspaper

|                                           a        c  |   64  sa01  magazine

 

Table 2.15 is the same as Table 5, but the options are shown by their scored values, not by their codes in the data.

 

TABLE 2.15 OBSERVED AVERAGE MEASURES FOR STUDENTS (scored) (BY CATEGORY SCORE)

-4    -3     -2     -1      0      1      2      3      4

|------+------+------+------+------+------+------+------|  NUM   TOPIC

|                                0                      1   55  al07  newspaper

|                                           0        1  |   64  sa01  magazine

 

---

 

Polytomous items

 

Tables 2.5 & 2.15 plot the observed average person measures for each scored category. It reflects how this sample used these categories. The plotted values cannot fall outside the range of the sample.

 

OBSERVED AVERAGE MEASURES BY SCORED CATEGORY FOR PUPILS

-2     -1       0       1       2       3       4       5

|-------+-------+-------+-------+-------+-------+-------|  NUM   ACT

|                       000102                          |    5  FIND BOTTLES AND CANS

|                                                       |

|                       000102                          |   23  WATCH A RAT

|                                                       |

|                   00  01         02                   |   20  WATCH BUGS

|                 00    01               02             |    4  WATCH GRASS CHANGE

|                   0001                02              |    8  LOOK IN SIDEWALK CRACKS

|-------+-------+-------+-------+-------+-------+-------|  NUM   ACT

-2     -1       0       1       2       3       4       5

 

   1 2  11 2 114346533233332222 322 2 1 1 1  1  1      11  PUPILS

    T        S         M         S         T