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PSPP x64 is a program for statistical analysis of sampled data. It is a Free replacement for the proprietary program SPSS, and appears very similar to it with a few exceptions.

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. Neither are there any artificial limits on the number of cases or variables which you can use. There are no additional packages to purchase in order to get “advanced” functions; all functionality that PSPP currently supports is in the core package.

PSPP x64 can perform descriptive statistics, T-tests, linear regression and non-parametric tests. Its backend is designed to perform its analyses as fast as possible, regardless of the size of the input data. You can use PSPP with its graphical interface or the more traditional syntax commands.

Features:

· Supports over 1 billion cases.
· Supports over 1 billion variables.
· Syntax and data files are compatible with SPSS.
· Choice of terminal or graphical user interface.
· Choice of text, postscript or html output formats.
· Inter-operates with Gnumeric, OpenOffice.Org and other free software.
· Easy data import from spreadsheets, text files and database sources.
· Fast statistical procedures, even on very large data sets.
· Fully indexed user manual.