The PSPP project (originally called "Fiasco") was born at the end of the 1990s as a free software replacement for SPSS, which is a data management and analysis tool, at the time produced by SPSS Inc. 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.
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