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Some of the libraries used by PSPP can be accessed programmatically PSPP-Perl provides an interface to the libraries used by PSPP.

It can export files in the SPSS 'portable' and 'system' file formats and to ASCII files. PSPP can import Gnumeric and OpenDocument spreadsheets, Postgres databases, comma-separated values and ASCII files. A range of statistical graphs can be produced, such as histograms, pie-charts, scree plots, and np-charts. This software provides a comprehensive set of capabilities including frequencies, cross-tabs comparison of means ( t-tests and one-way ANOVA), linear regression, logistic regression, reliability ( Cronbach's alpha, not failure or Weibull), and re-ordering data, non-parametric tests, factor analysis, cluster analysis, principal components analysis, chi-square analysis and more.Īt the user's choice, statistical output and graphics are available in ASCII, PDF, PostScript, SVG or HTML formats. The name has "no official acronymic expansion". It is written in C and uses GNU Scientific Library for its mathematical routines.

It has a graphical user interface and conventional command-line interface. PSPP is a free software application for analysis of sampled data, intended as a free alternative for IBM SPSS Statistics.