This writes out the Table of inter-person correlations which is the basis of the principal components analysis of residuals. The basis for the correlations is controlled by PRCOMP=.
PRCOMP=R correlates the raw residuals
PRCOMP=S correlates the standardized residuals
PRCOMP=O correlates the observations
Extreme scores: minimum possible (0) and maximum possible (perfect) item scores are omitted from the computation of the correlations. Persons with extreme scores are not reported. Their correlation is 0.
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=? opens a Browse window
Example 1: Write out the Table of inter-person residual correlations. PCORFIL=file.txt - Then file.txt contains, for SF.txt, in 12-character, fixed-format, columns:
PERSON PERSON CORRELATION
1 2 .028295
1 3 .376179
1 4 .457773
1 5 .212332
1 6 -.452587
1 7 .338937
.....
Example 2: When PCORFILE= is selected on the Output Files menu or MATRIX=YES, the Data Format: Matrix option can be selected:
This produces in 10-character wide columns: