Pspp программа


PSPP - GNU Project - Free Software Foundation

GNU PSPP

PSPP 1.0.1 has been released.

GNU PSPP is a program for statistical analysis of sampled data. It is a free as in freedom 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 is a stable and reliable application. It can perform descriptive statistics, T-tests, anova, linear and logistic regression, measures of association, cluster analysis, reliability and factor analysis, non-parametric tests and more. 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.

A brief list of some of the PSPP's features follows below. We also made available a page with screenshots and sample output. PSPP has:

  • Support for over 1 billion cases.
  • Support for over 1 billion variables.
  • Syntax and data files which are compatible with those of SPSS.
  • A choice of terminal or graphical user interface.
  • A choice of text, postscript, pdf, opendocument or html output formats.
  • Inter-operability with Gnumeric, LibreOffice, OpenOffice.Org and other free software.
  • Easy data import from spreadsheets, text files and database sources.
  • The capability to open, analyse and edit two or more datasets concurrently. They can also be merged, joined or concatenated.
  • A user interface supporting all common character sets and which has been translated to multiple languages.
  • Fast statistical procedures, even on very large data sets.
  • No license fees.
  • No expiration period.
  • No unethical “end user license agreements”.
  • A fully indexed user manual.
  • Freedom ensured; It is licensed under the GPLv3 or later.
  • Portability; Runs on many different computers and many different operating systems (GNU or GNU/Linux are the prefered platforms, but we have had many reports that it runs well on other systems too).

PSPP is particularly aimed at statisticians, social scientists and students requiring fast convenient analysis of sampled data.

Downloading PSPP

As with most GNU software, PSPP can be found on the main GNU ftp server: http://ftp.gnu.org/gnu/pspp/ (via HTTP) and ftp://ftp.gnu.org/gnu/pspp/ (via FTP). It can also be found on the GNU mirrors; please use a mirror if possible.

There are some additional ways you can download or otherwise obtain PSPP.

Documentation

Documentation for PSPP is available online, as is documentation for most GNU software. You may also find more information about PSPP by running info pspp or man pspp, or by looking at /usr/share/doc/pspp/, /usr/local/doc/pspp/, or similar directories on your system. A brief summary is available by running pspp --help.

A developer's manual is also available in various formats. Developers of software designed to interoperate with PSPP or SPSS will find this manual's appendices particularly valuable, because they specify the data file formats in great detail.

A manual for PSPP in French, written independently by Julie Séguéla, is also available in PDF and LaTeX formats.

A guide to PSPP in Polish, written independently by Daniel Mider and Aneta Marcinkowska, is also available.

Further information

For further information, please browse our list of frequently asked questions to see if your issue is mentioned there. If it is not, you might also want to peruse the archives of our mailing list, pspp-users; the issue may have been discussed there. Failing that, you are welcome to subscribe to the list, and send a question of your own.

If you believe you have found a bug in PSPP, please report it either by sending a message to the mailing list bug-gnu-pspp or by using the bug tracker. To privately report a security vulnerability in GNU PSPP, please send your report to the pspp-security mailing list.

Announcements about PSPP are made on pspp-announce as well as (in common with most other GNU software) info-gnu.

Getting involved

Development of PSPP and GNU in general, is a volunteer effort, and you can contribute. For information, please read How to help GNU. If you'd like to get involved, it's a good idea to join the discussion mailing list (see above).

Test releases Trying the latest test release (when available) is always appreciated. Test releases of PSPP can be found at http://alpha.gnu.org/gnu/pspp/ (via HTTP) and ftp://alpha.gnu.org/gnu/pspp/ (via FTP). Reliability and accuracy of PSPP is something we take seriously. Accordingly, in addition to regular manual testing, snapshot builds including automatic regression tests are typically run every day. Development For development sources, issue trackers, and other information, please see the PSPP project page at savannah.gnu.org. Translating PSPP To translate PSPP's messages into other languages, please see the Translation Project page for PSPP. If you have a new translation of the message strings, or updates to the existing strings, please have the changes made in this repository. Only translations from this site will be incorporated into PSPP. For more information, see the Translation Project. Maintainer PSPP is currently being maintained by Ben Pfaff. Please use the mailing lists for contact.

Licensing

PSPP is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.

www.gnu.org

PSPP - GNU Project - Free Software Foundation

GNU PSPP Screenshots

This page demonstrates some of PSPP's capabilities and the various ways it can be used. It's not intended to be a tutorial, or a substitute for the reference manual, but a brief demonstration of what PSPP can do.

Note: This page is graphics heavy! Click on any of the images to see large scale versions.

Compatibility

PSPP is designed as a Free replacement for SPSS. That is to say, it behaves as experienced SPSS users would expect, and their system files and syntax files can be used in PSPP with little or no modification, and will produce similar results (the actual numbers should be identical). The number of variables and cases is limited only by the computer architecture.

In a few instances, the default behaviour of PSPP differs where the developers believe enhancements are desirable or it makes sense to do so, but this can be overridden by the user if desired.

Ways of Using PSPP

PSPP can be used in several different modes, depending on the requirements, experience and preference of the user.

Terminal Mode

One way to use PSPP is from a terminal. This method avoids cluttering your screen with a lot of dialog boxes, menus and other windows. If you are familiar with the PSPP syntax, then this is the simplest way to use the program. If your terminal has cursor keys, they behave in PSPP in an intuitive manner. You can also use the HOST command to temporarily return to the shell at any time. Your session is logged to a file, so that you can review it later. PSPP is designed to handle very large volumes of data. Larger even than the virtual memory of the computer.

Graphic User Interface

Users familiar with other software may prefer the graphic user interface, which allows you to define data without needing to become familiar with the PSPP syntax. However, instead one must remember lots of menu and button click sequences. Data can be entered from the keyboard, cut-and-pasted from spreadsheet applications or imported from existing files. To start the graphic user interface, type psppire from your terminal, or use the menu item provided by the operating system.

There is a spreadsheet type data entry window for the entry and viewing of data and its meta data.

Drop down menus provide access to the supported statistical analyses and transformations, in addition to operations such as loading and saving of the data and syntax files. You can use the features via interactive dialog boxes which indicate the options and required parameters of each command. Whilst the drop-down menus and dialogs are useful for many analyses, the syntax mechanism provides a more powerful and flexible means of controlling PSPP. In order to assist users creating syntax files, each dialog can optionally print its syntax into a separate window for later execution.

Non Interactive Mode

There is also a non-interactive mode of operation. This is useful for longer analyses which you want to perform again and again. You can choose many different formats to save the results of your analyses. Available output formats include:

This mode can also be used as part of a wider system, such as automated creation and processing of data files for online display.

Data Visualisation

PSPP can generate high quality plots to help with visualisation of the distribution of data. Among the type of plots which can be displayed are box-and-whisker plots, normal probability plots and histograms. These complement descriptive statistics and help determine the most appropriate type of analysis for the data, and/or what transformations are necessary. The data selection capabilities of PSPP make it simple to generate plots from a subset of variables or from data which match only certain criteria.

Plots and graphs created by PSPP are formatted in standard file formats such as postscript or PNG, so as to allow easy import into reports or other documents.

Data Manipulation

Recoding and manipulation of data can be achieved rapidly using PSPP transformations. Transformations enable you to specify operations without needing an extra iteration though the data. Operations may comprise simple boolean criteria, arithmetic expressions and mathematical functions. PSPP supports many math functions, including random number distributions, trigonometry and date-time conversions. Transformations may be cascaded, so that many operations can be applied concurrently. Like other operations, the data manipulation features can be performed using either the syntax commands or through interactive dialog boxes.

www.gnu.org

PSPP - GNU Project - Free Software Foundation

GNU PSPP — Frequently Asked Questions

Here we try to answer some of the questions about PSPP that arise from time to time.

What is PSPP?

PSPP is a program for statistical analysis of sampled data. It is a free replacement for the proprietary program, SPSS.

One goal of the PSPP project is compatibility with the SPSS language. It currently features:

  • High-quality output formatting.
  • An easy to use graphical user interface.
  • A command line interface to allow seasoned users to rapidly perform analysis.
  • A comprehensive selection of data preprocessing, analysis and visualisation commands.
  • Portability: PSPP can be built on a very wide range of platforms.

What can PSPP do?

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.

Refer to the manual for the complete list of supported commands.

Where can I get PSPP?

See this page.

How do I install PSPP?

There are several methods:

  • Many operating systems come with PSPP already packaged. This is often the easiest method, but might not get you the most up to date version. An incomplete list of packages for various operating systems.
  • Download a tarball and follow the instructions in the INSTALL file. This is the canonical method used for most GNU software.
  • However, if really want the very latest version, and are willing to put in extra effort to install it, and are prepared to accept that it may contain bugs, then compile from the Git snapshot. Look in the file README.GIT file and follow the instructions there.

How do I get started using PSPP?

Having installed PSPP, try this:

  1. Using your favourite editor, write a file (name it myfile.sps) containing the following: DATA LIST LIST /name (a25) quantity (f8). BEGIN DATA. widgets 10345 oojars 2345 dubreys 98 thingumies 518 END DATA. LIST. DESCRIPTIVES /quantity /statistics ALL.
  2. Enter the command pspp myfile.sps
  3. Look at your results in pspp.list

PSPP is very versatile and there are lots of different types of statistical analysis possible. You need to become familiar with the documentation to unleash its full potential.

How do I configure the PSPP interface language?

PSPP respects the locale of the environment. So if, for example, your operating system (or the currently logged in user) is set to Portuguese, then that is what PSPP will display.

How you change the environment's locale depends on the operating system. For example, on GNU or on GNU/Linux you could use the command export LANG=pt_PT (for Portuguese spoken in Portugal) or export LANG=pt_BR for Brazillian Portuguese. This should also work for all operating systems which are POSIX compliant. For others, you will have to refer to your OS documentation.

What documentation is available?

The PSPP manual, written in Texinfo format, is the primary reference for using PSPP. Besides the Texinfo format a few other formats are available like HTML and PDF. A few additional documentation files are included in the source distribution:

README A quick introduction to PSPP. INSTALL Notes on building and installing. ChangeLog Details of the latest bleeding edge changes.

A manual for PSPP in French, written independently by Julie Séguéla, is also available in PDF and LaTeX formats.

A guide to PSPP in Polish, written independently by Daniel Mider and Aneta Marcinkowska, is also available.

There are also heaps of unofficial resources on the internet. Use a search engine to find them.

There are a lot of concepts I don't understand. Where can I learn about them?

One good online introductory statistics textbook is Online Statistics Education: A Multimedia Course of Study (http://onlinestatbook.com/). Project Leader: David M. Lane, Rice University. Disclaimer: PSPP, its developers and the GNU Project have no affiliation with this publisher or author of this book.

PSPP is a clone of SPSS. So why should I use PSPP when SPSS has all the same features?

Firstly, PSPP is not a "clone". No part of SPSS was used to write PSPP and there is no code shared between the projects. If it was a clone, then there would indeed be no advantage using one program or the other. But instead, PSPP is an independent free software program (and one of its design goals was ease of use for people already familiar with SPSS).

Among other advantages, this means that if you find it doesn't completely fit your needs - perhaps there is a statistical test which you would like it to perform - then you have the means and the right to improve it to fit your requirements. Whereas if you attempted to do this with non-free software such as SPSS it would be both difficult and illegal.

Furthermore, because PSPP is free software, you can use it for whatever you like and for as long as you like (there's no "expiry") and you are welcome to give away (or sell) copies to others - for example to students undertaking an introductory statistics course. If you have made your own improvements, then you can include those changes in the copies you distribute.

Another important advantage: Since the source code is available to all, unlimited peer review is possible. Should PSPP's accuracy be called into question, it can easily be audited by a competent, independent authority. Conversely, since the source code of proprietary software is secret, nobody can check to see if it contains numerical instability, inappropriate algorithm implementations or other potential errors.

Some secondary reasons why people sometimes prefer PSPP include:

  • Reduced costs
  • Inter platform portability
  • A number of people have reported that PSPP runs faster
  • Features not available in other software, such as importing from Postgres, Gnumeric etc.
  • It comes already bundled with popular operating systems, such as Debian GNU/Linux

How can I be sure that PSPP gives accurate results?

When you install PSPP, the GNU Project gives you exactly the same warranty that you would get with any proprietary program viz: None at all.

However, we feel confident that PSPP provides reliable and accurate results for a number or reasons

  • Every release has over 1000 tests. These are run before each release. In addition, you can run them on your own machine to make sure PSPP is accurate for your platform.
  • For many years there has been a publicly available bug reporting and tracking service, where anyone can report problems. Many issues have been brought to our attention but there have been few, if any, confirmed reports of a miscalculated statistic on a released PSPP version.
  • We regularly analyse the code using tools such as valgrind and gcov to expose any latent defects.
  • The complete source code is available for everyone to review which, should bugs be inadvertently introduced, increases the chances of them being quickly discovered and fixed.

As already mentioned, the Free Software Foundation does not provide any warranty for PSPP. However, unlike with proprietary software, you are free to engage any third party of your choice to provide a support contract and/or a warranty service with terms acceptable to you.

Can I use PSPP at school/college/university?

Many introductory statistics courses specify the use of some statistical analysis software. Some schools specify or recommend the use of PSPP. Others will permit its use if the student asks. If you are enrolled in a course which specifies a proprietary statistical analysis program, we would encourage you to speak to the coordinator of the course and explain that you would prefer to use a free softwarepackage (such as PSPP) instead. Today, many schools and universities have a formal policy that students must not be compelled to use proprietary software when an alternative exists. It is worth finding out if this is the case at your institution. Speak to your students' association if necessary.

Are PSPP's results accepted for publication in scientific papers?

What is and is not accepted for publication in a journal is up to that journal's editor. We are not aware of any paper ever having been rejected on the grounds that PSPP was used, but we are aware of studies using PSPP for analysis, which have been published by reputable academic journals.

Please also be aware of PSPP's warranty.

I get an error message: "Number followed by garbage" and my data is blank.

This warning means that you are trying to import data using DATA LIST and the data encountered does not match the format you have specified. Check that there are no stray characters in the data.

If you are running under a non English locale and you are importing decimal data, it is likely that you have data with dots as decimal separators whereas PSPP is expecting commas. Either change the dots to commas, or place the line SET DECIMAL DOT. at the top of the file.

Results are displayed only to 2 decimal places. I need more.

At the top of your syntax file, or in your .pspprc file, put (for example) the line SET FORMAT F22.6. which will tell PSPP to print all results to 6 decimal places and to a formatted width of 22 columns.

I have my data in a spreadsheet. How can I import it into PSPP?

PSPP can directly import spreadsheets created by Gnumeric, LibreOffice and Openoffice.Org. To do so, use the GET DATA command. Alternatively, if using the GUI, click on "File|Import Data".

We recommend you convert all your spreadsheets either to Gnumeric or Libreoffice format to avoid this extra step. If you have the proprietary spreadsheet program MSExcel you can do this in one of the following ways:

  • First save the data as Comma Separated Values (csv) and import it into the free spreadsheet program
  • Some versions of Excel allow you to save the data directly as an Open Document Spreadsheet (ods) file
  • We encourage everyone to use free software applications. If however for some reason you want to continue using MSOffice you can set default file format to OpenDocumentFormat

Can PSPP open encrypted .sav or .sps files?

PSPP includes a tool, named pspp-convert, that can decrypt encrypted .sav or .sps files, given the password. Please read the PSPP manual or the pspp-convert manual, for details.

The SPSS encrypted syntax file format is unacceptably insecure, so to discourage its use PSPP and PSPPIRE do not directly read or write this file format.

How can I get more information on PSPP?

There are several resources for PSPP information. The first is this FAQ and related documentation in the distribution and on the web site. The second is the PSPP source code itself, if you are programmatically inclined.

For discussion with other PSPP users our mailinglist [email protected] is available. You can subscribe to this list at http://lists.gnu.org/mailman/listinfo/pspp-users

Finally, we look forward to all comments and questions related to PSPP. The irc channel is #pspp, which is on the freenode network.

Why don't you merge PSPP with R, GRETL, Octave ... <my favourite program>?

This suggestion comes up from time to time. It is unlikely to happen for a number of technical, philosophical and legal reasons.

However, we certainly want to provide features which will make PSPP easier to interact with other programs. If you want an import/export filter or some other feature to help PSPP complement your favourite program, then please talk to us about it.

PSPP lacks this feature which I really need. How can I get PSPP to support it?

There are several ways:

  • Download the source code and implement it yourself.
  • Hire somebody to implement it for you.
  • Send an email to the developers and ask for the feature. The developers are interested in hearing about what users want.

Any help you can give is appreciated. See the following question.

Can I help out with PSPP development?

Yes. We will gladly accept help in the form of improvements to the code, artwork or documentation.

When you have fixed a bug or improved some parts of PSPP, you can submit your patches at http://savannah.gnu.org/patch/?group=pspp

Sometimes users wish to contribute money toward PSPP development. The PSPP developers appreciate the spirit behind this idea, but monetary donations are less useful than other forms of help.

Something doesn't work properly on Windows/Mac.

PSPP is GNU Software and part of the GNU System. That means the platforms under which it works best are GNU and GNU/Linux. Like all GNU software, cross platform portability is something which we try to achieve, but it is not the highest priority. Furthermore, supporting free systems takes precedence over non-free platforms, such as windows or Mac OS, and as a matter of policy PSPP will always work best on a free operating system.

To sum up: Windows and Mac are low on our list of priorities. We recommend you switch to a free operating system. Bug fixes however, are always accepted.

What does PSPP stand for?

PSPP does not have any official acronymic expansion. But they're easy to come up with. For example:

  • Perfect Statistics Professionally Presented.
  • Probabilities Sometimes Prevent Problems.
  • People Should Prefer PSPP.

Send along your favorites!

Help! I'm stuck

If you need help using or installing PSPP, you can try one of the following:

www.gnu.org

PSPP for Windows 7 - Statistical analysis of sampled data

Analyze sampled data with the help of this tool

PSPP is an application designed to analyze sampled data and perform descriptive statistics, T-tests, linear regression, and non-parametric tests. PSPP lets you compute variables, count occurrences of values within cases, rank cases, recode data into the same variables or different ones, run pending transformation tasks, analyze frequencies, compare means, run a reliability evaluation, create ROC curves, and more.

PSPP 0.10.1-g1082b8 full details

PSPP - Windows 7 Download awards

PSPP 0.10.1-g1082b8 full description

PSPP 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. PSPP is an application designed to analyze sampled data and perform descriptive statistics, T-tests, linear regression, and non-parametric tests. PSPP lets you compute variables, count occurrences of values within cases, rank cases, recode data into the same variables or different ones, run pending transformation tasks, analyze frequencies, compare means, run a reliability evaluation, create ROC curves, and more.

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. The application is very light on the system resources, using a little amount of CPU and RAM. It has a good reaction speed and is stable. We have not come across any issues in our tests, since the tool did not hang or crash. The bottom line is that PSPP is free, and it caters to experienced users who want to analyze sampled data and perform tests in a friendly working environment.

PSPP 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.

PSPP 0.10.1-g1082b8 download tags

PSPP 0.10.1-g1082b8 Windows 7 release notes

New ReleaseBuilt from PSPP commit 1082b8558c7fec407f23e2cecbcd7eb30a84143b in branch master on builder sigabrt. Built from Gnulib commit c5c4f53b31f1ad04f4033a6124120ffec9257847. [ PSPP release history ]

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PSPP for Windows 7 - Copyright information

All PSPP reviews, submitted ratings and written comments become the sole property of Windows 7 download. You acknowledge that you, not windows7download, are responsible for the contents of your submission. However, windows7download reserves the right to remove or refuse to post any submission for any reason.

Windows 7 Download periodically updates pricing and software information of PSPP full version from the publisher, but some information may be out-of-date. You should confirm all information. Using warez version, crack, warez passwords, patches, serial numbers, registration codes, key generator, pirate key, keymaker or keygen for PSPP license key is illegal and prevent future development of PSPP. Download links are directly from our mirrors or publisher's website, PSPP torrent or shared files from free file sharing and free upload services, including Rapidshare, MegaUpload, YouSendIt, SendSpace, DepositFiles, DivShare, HellShare, HotFile, FileServe or MediaFire, are not used.

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