PCORFIL= person residual correlation file

This writes out the Table of inter-person correlations which is the basis of the principal components analysis of residuals.

Missing data: for these Winsteps substitutes their expectations when possible. For residuals and standardized residuals, these are 0. Items with extreme scores (minimum possible or maximum possible): Winsteps drops these from the correlation computation. The reason for these choices is to make the principal components analysis of residuals as meaningful as possible.

PCORFILE = file name

Example:        Write out the Table of inter-person residual correlations. PCORFIL=file.txt - Then file.txt contains, for SF.txt,

       Person        Person        Correlation

       1        3        .23

       1        4        -.31

       1        5        .13

       .....

       3        4        -.10

       3        5        -.02

       .....

Example 2:        When PCORFILE= is selected on the Output Files menu or MATRIX=YES, the Data Format: Matrix option can be selected:

This produces:

 1.0000   .2265  -.3147   .1306  ....

  .2265  1.0000  -.1048  -.0222  ....

 -.3147  -.1048  1.0000   .0403  ....

 ......  ......  ......  ......  ....