Statistical analysis tool

 PSPP is a program for statistical analysis of sampled data. It is a free
 replacement for the proprietary program SPSS.
 .
 PSPP supports T-tests, ANOVA, GLM, factor analysis, non-parametric tests, and
 other statistical features. PSPP produces statistical reports in plain text,
 PDF, PostScript, CSV, HTML, SVG, and OpenDocument formats.
 .
 PSPP has both text-based and graphical user interfaces. The PSPP user interface
 has been translated into a number of languages.