Does Extraction Method Matter?
So, now that we have gone through the effort of learning about the different extraction methods and figuring how to run them in SAS, what difference do they really make? Let’s see by comparing the results of five different extraction methods using the data sets summarized in Example data sets. We ran these models using the same syntax presented in the section above, just changing the
METHODoption and eliminating the
IORSoption for all except the PAF and iterated PAF methods. We then organized the results into some nice summary tables to permit easy comparison.
Engineering data. As we mentioned above, this data usually gives a clear two-factor solution. Communality estimates for the engineering data across ...