PSPP

PSPP provides many transformations and utilities. Procedures provide the ability to perform t-tests, anova, linear regression, logistic regression, cluster analysis, reliability analysis, factor analysis, non parametric tests and other analyses. PSPP is a free software application for analysis of sampled data, intended as a free alternative for IBM SPSS Statistics. It has a graphical user interface and conventional command-line interface. It is written in C and uses GNU Scientific Library for its mathematical routines.