Using SPSS and PASW. SPSS or "Statistical Package for the Social Sciences" is a software program widely used in the social sciences for conducting statistical analysis of data.
The company that produced the software was SPSS, Inc., but it was bought in 2008 by IBM. During the transition, the software package was renamed to PASW, but has since been renamed back to SPSS. GNU PSPP is a free alternative to SPSS[1]. It appears to be very similar. Mailing List Archive. R info for SAS, SPSS, and Stata Users.