Example 6: Keys in data record format

Do not use FORMAT= unless there is no other way. It is tricky to set up correctly. MFORMS= is much easier.

 

A test of 165 multiple-choice items with multiple data lines per data record. The scoring key is formatted in the same way as the data lines:

 

; This file is EXAM6.TXT

 TITLE='Demonstration of KEY1 record' title

 FORMAT=(1X,10A,T23,50A,/,T23,50A,/,T23,50A,/,T23,15A)

; The first character is ignored, 

; then 10 characters in first record are person id, 

; then starting in column 23, 

; 50 columns in first 3 records, 

; and 15 responses in fourth record.

 

;  Using MFORMS= to reformat the same data record

;  MFORMS=*

;  Data= filename ; put the input data in a separate file

;  L=4           ; 4 data input lines per output record

;  P1-10=2       ; person label characters 1-10 start in column 2 of line 1 of input data

;  I1-50=23      ; responses to items 1-50 start in column 23 of line 1 of input data

;  I51-100=2:23  ; responses to items 51-100 start in column 23 of line 2 of input data

;  I101-150=3:23 ; responses to items 101-150 start in column 23 of line 3 of input data

;  I151-165=4:23 ; responses to items 151-165 start in column 23 of line 4 of input data

;  *   ; end of MFORMS=

;      ; Note this does not reformat the Keyfrm=, so use KEY1=

 

; In the reformatted record

 NAME1=1  ; Person-id starts in column 1

 ITEM1=11 ; Item responses start in column 11 of reformatted record

 NI=165   ; There are 165 items

 CODES="ABCD " ; The raw responses are ABCD and BLANK. 

          ; Put character strings in " " if blanks are to be included.

 MISSCORE=0  ; Blanks and invalid codes scored wrong=0

 KEYFRM=1 ; There is a KEY1 record after &END which is formatted 

          ; exactly like a data record specifying the correct responses.

RFILE=exam6rf.txt ; this shows effect of reformatting and scoring

PTBISERIAL=YES ; Raw score point-biserial excluding extremes

TFILE=*   ; List of desired tables

1.0       ; Subtable 0 of Table 1

3         ; Table 3.1, 3.2, etc.

6

10

20

*         ; end of list

 

 &END     ; KEY1= formatted like your data follows:

Key 1 Record          CDABCDBDABCADCBDBCADBABDDCDABCBABDCACBADACBADBAACD

after &END            CCBDACABDADCBDCABBCACDBAABCDADCDCADBCABCDCADABACDA

in FORMAT= format     BADCDBADCBADCDBACBADBCAADBCBBDCBACDBACBADCDADBACDB

before item names     ABDACDCDBADBCAB

A1   First item name

A2

  .

A164

A165

END NAMES

090111000102   10001  BDABADCDACCDCCADBCBDBCDDACADDCACCCBCCADBDABADCAADD

                      ABDDDCABDADCBDACDBCACADABCDCCDCBDBCCABBCDCADDCDCDA

                      BDCCDBABCDCDDDCBADCACBDCBDBACBCBCADBABAADCDCBABAAC

                      DCBCCACABCDDCBC

090111000202   10002  BDCDCDCDADCBCCBDBDCABCBDACDABCAABCAACBBBACAADDAACA

                      ACBCACBBDADCBDCBBBCDCCDACCBCADCACCAACDBCCDADDBACDA

                      BADCDCBDBDCDCCBACCCBBAABDBCDBCCBAADBABBADBDDABDCAA

                      DCDBCDCDBADBCCB

 

   .

 

090111008402   10084  CDABCDADDDCDDDDCBDCCBCCDACDBBCACDBCCCBDDACBADCAACD

                      ACBDCCDBDADCCBCDDBBDCABACCBDBDCBCCACCBACDCADABACDA

                      BABBDCADBDDBCDADDDCDDBCABCBDCCCAACDBACBDDBDBCCAACB

                      DBACDBCDBADDCBC

090111008502   10085  CDABADADABCADCDDBDADBBCBACDABCCABACCCDAAACBADAAACD

                      ACBCDCBBDADCDDCADBCCCDBADDBBBDCACAABCBDDDCADABACDA

                      BADABBADBBADCADACDABBAACACAABDCBACDBADBACCDBACBADA

                      BCABCBCDBADDCCC

 

or, using continuation lines for the key:

 

 CODES="ABCD " ; The raw responses are ABCD and BLANK

;KEYFRM=  ; omit this, not needed

 KEY1 = CDABCDBDABCADCBDBCADBABDDCDABCBABDCACBADACBADBAACD+

       +CCBDACABDADCBDCABBCACDBAABCDADCDCADBCABCDCADABACDA+

       +BADCDBADCBADCDBACBADBCAADBCBBDCBACDBACBADCDADBACDB+

       +ABDACDCDBADBCAB

; "+" are continuation characters


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