In the book “SPSS For Dummies“, the author discusses PSPP under the heading of “Ten Useful Things You Can Find on the Internet”. The author of PSPP considered this ethically unacceptable, and decided to write a program which might with time become functionally identical to SPSS, except that there would be no licence expiry, and everyone would be permitted to copy, modify and share the program. SPSS is closed-source and includes a restrictive licence and digital rights management. The PSPP project (originally called “Fiasco”) is a free, open-source alternative to the proprietary statistics package SPSS. 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, OpenDocument and Excel spreadsheets, Postgres databases, comma-separated values– and ASCII-files. A limited range of statistical graphs can be produced, such as histograms, pie-charts and np-charts. This software provides a basic set of capabilities: frequencies, cross-tabs comparison of means ( T-tests and one-way ANOVA) linear regression, reliability (Cronbach’s Alpha, not failure or Weibull), and re-ordering data, non-parametric tests, factor analysis and more.Īt the user’s choice, statistical output and graphics are done in ascii, pdf, postscript or html formats. PSPP is particularly aimed at statisticians, social scientists and students requiring fast convenient analysis of sampled data. Cross platform Runs on many different computers and many different operating systems.Free Software licensed under GPLv3 or later.No unethical “end user license agreements”.Fast statistical procedures, even on very large data sets.Easy data import from spreadsheets, text files and database sources.Inter-operates with Gnumeric, OpenOffice.Org and other free software.Choice of text, postscript or html output formats.Choice of terminal or graphical user interface.Syntax and data files are compatible with SPSS.You can use PSPP with its graphical interface or the more traditional syntax commands.Ī brief list of some of the features of PSPP follows: Its backend is designed to perform its analyses as fast as possible, regardless of the size of the input data. PSPP can perform descriptive statistics, T-tests, linear regression and non-parametric tests. There are no additional packages to purchase in order to get “advanced” functions all functionality that PSPP currently supports is in the core package. Neither are there any artificial limits on the number of cases or variables which you can use. The most important of these exceptions are, that there are no “time bombs” your copy of PSPP will not “expire” or deliberately stop working in the future. It is a Free replacement for the proprietary program SPSS, and appears very similar to it with a few exceptions. PSPP is a program for statistical analysis of sampled data. It is available at or and you can also read more at If you are SPSS user (for statistics/ not data mining) you can also try 0ut GNU PSPP- which is the open source equivalent and quite eerily impressive in performance.
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