Systat Statistical Software

[Berniece Domnick]

SYSTATis a statistics and statistical graphics software package, developed by Leland Wilkinson in the late 1970s, who was at the time an assistant professor of psychology at the University of Illinois at Chicago. Systat Software Inc. was incorporated in 1983 and grew to over 50 employees.

In 1995, SYSTAT was sold to SPSS Inc., who marketed the product to a scientific audience under the SPSS Science division. By 2002, SPSS had changed its focus to business analytics and decided to sell SYSTAT to Cranes Software in Bangalore, India. Cranes formed Systat Software, Inc. to market and distribute SYSTAT in the US, and a number of other divisions for global distribution. The headquarters are in Chicago, Illinois.

By 2005, SYSTAT was in its eleventh version having a revamped codebase completely changed from Fortran into C++. Version 13 came out in 2009, with improvements in the user interface and several new features.

Systat offers an unparalleled variety of scientific and technical graphing options. By creating individual graphs your results will become more meaningful. SYSTAT 2D and 3D graphics are immediately ready for publication and may be used for appropriate presentations.

Widely approved by more than half a million users in research institutes, universities and laboratories around the world, Systat shows its excellent place in the community of statisticians. Using Systat, you will achieve meaningful results even with extreme data. Bootstrapping is available for all statistical procedures.

The program not only analyzes simple and complex linear variance and regression models but also multivariate data structures. Multivariate methods such as multidimensional scaling, factor and principal components analysis and cluster algorithms are implemented. Of course, crosstab statistics, lifecycle and time series analysis are not missing.

SYSTAT 13 continues the legacy of Dr. Leland Wilkinson, who created SYSTAT over twenty years ago and who pioneered programmable graphs for statistical visualization. SYSTAT 13 continues this tradition of state-of-the-art intelligent statistical graphing with significant graph enhancements, including greater interactivity, editability and customizability. And continuing its reputation of well-thought-out analytics, SYSTAT 13 contains major new statistical features which include

Furthermore SYSTAT 13 brings enhancements concerning its graphical capabilities and the ability to handle even larger datasets than before. It can compute statistical methods up to 10 times faster than older versions on most problems.

These put SYSTAT at the leading edge of professional statistical analyses. It is not only a package for the statistically-savvy scientist, but is also accessible to a novice data analyst. Its output is stunning and is in a form ready to submit for publication.

SYSTAT 13 is a powerful statistical software that has every statistical procedure you need to carry out efficient statistical analysis of your data. It provides you with features from the most elementary descriptive statistics to very advanced statistical methodology based on sophisticated algorithms. If you are a novice statistical user, you can work with its friendly and simple menu-dialog. If you are a statistically-savvy user, you might prefer to use its intuitive command language, and analyze your data swiftly and with ease. In either case, you can exploit its staggering range of powerful techniques to analyze many types of data to answer many types of questions. You can carry out very comprehensive analysis of univariate and multivariate data based on linear, general linear, and mixed linear models. You can carry out different types of robust regression analysis when your data are not suitable for conventional multiple regression analysis. You can also compute partial least-squares regression. You can design experiments, carry out power analysis, do probability calculations on a whole lot of distributions and fit them to data. You can perform matrix computations. Anything else you may need---Time Series, Survival Analysis, Response Surface Optimization, Spatial Statistics, Test Item Analysis, Cluster Analysis, Classification and Regression Trees, Correspondence Analysis, Multidimensional Scaling, Conjoint Analysis, Quality Analysis, Path Analysis, etc., etc.---SYSTAT has them all.

You can use the powerful Mersenne-Twister random number generator for your bootstrap and simulation tasks. You can exploit SYSTAT's random number generator from as many as 43 univariate and multivariate, discrete and continuous distributions for your Monte Carlo exercises. When the distributions are more complicated, use Rejection Sampling and Adaptive Rejection Sampling to draw random samples. For your complex Bayesian computations, suitably adapt SYSTAT's generic Markov chain Monte Carlo (MCMC) procedures like various types of Metropolis-Hastings and Gibbs Sampling features to draw random samples and to carry out Monte Carlo integration thereof.

SYSTAT 13 offers a large variety of scientific and technical graphing types and a great deal of interactivity to help you produce just the right type of graph and customize it to accompany your analysis. Use the Interactive Graphics Dialog to change multiple aspects of your graphics using a single integrated dialog. Compare subgroups, overlay charts, transform coordinates, add geographic projections, change colors, symbols, and more, to create insightful presentations. Change graph locations, point-and-click to alter axis labels, scales, colors and symbols. Create unique graphs that bring out the important features in your data with advanced chart options including normal and kernel densities, multiplots, maps, Voronoi tessellations, function plots, contours, scatterplot matrices with 20 diagonal density choices and 126 nonparametric smoothing options, just to name a few. Speed up your analysis by rotating your 3-D graphs to visually determine the perfect power or log transformation to normalize your data using the Dynamic Explorer. Present visually useful and attractive summary of large data using hexagonal binning.

Save time and effort with SYSTAT's informative Startpage. Work with its clear, comprehensive dialogs or with its interactive, intuitive, and easy-to-learn command language. You can work faster combining these two modes with the interlinked Command Line Interface and Menu-Dialog. Save time and effort with the Autocomplete facility. Ease your way through analyses with theme menus, customizable menus, and toolbars. Get more flexible output with longer variable names. Speed up your analysis using data and variable tabs. Save useful data file and variable information in the data file itself. Quickly navigate through detailed results using the browser-style Output Organizer. Instantly visualize your results with automatically produced Quick Graphs. Run the same analysis with ease on different data sets using token variables and command templates. Use the command log to track and report your statistical methodology. Produce publication-quality output and graphs.

You can reorganize almost any aspect of SYSTAT to suit your style of work and your needs. You can customize various elements of its interface. You can customize menu and toolbars to make often-used items immediately accessible. You can choose the appearance of your output in respect of fonts, width, spacing, style, etc. You can make your graphs look as you want them to in respect of color, background, pattern, surface style, line style, symbol style, and label style. You can customize commandspace, output organizer, keyboard shortcuts, actions of buttons, etc.

Innumerable items of Help make the job of understanding and running SYSTAT much easier, faster, and error-free. They are available at your fingertips or at the click of the mouse. Some of them are: Tip of the Day, Bubble Help, F1 Help, Tooltips, Index, Glossary, Expanded Status Bar Help, Recent Files on Start Page, Theme Menus, Examples tab, Autocomplete, Acronym Expansions, Online Tutorial. Furthermore, there are about 600 examples available online with their command files and annotated data files, for you to study and emulate. And there are over 4300 pages of the manual available as online pdf files and in printed form.

Forecast Time Series Error Variance with ARCH and GARCH

Conventional time series and econometric models assume that the conditional variance of a series is consistent over time, which may not always be true. ARCH and GARCH models use the past disturbances and variances in your time series data to accurately describe and account for future volatility.

Find the Best Predictors with Best Subsets Regression

BSR seeks to identify a small number of the best predictors in a trial set. It is especially helpful in situations where it might not be clear which predictors will end up being the most useful, especially in the areas of economics, ecology and the environment.

Add Polish to Your Research with Stunning 2D and 3D Graphs

SYSTAT renders visually compelling 2D graphics perfect for publication, and incredible 3D graphics that bring an incredible wow-factor to any research or business presentation.

Analyze Larger Data Sets with Greater Speed

SYSTAT has been engineered to handle even larger datasets than before. SYSTAT computes statistical methods up to 10 times faster than older versions on most problems.

Experience the Enhanced Look and Feel

SYSTAT features a completely rebuilt data editor which gives you greater control and flicker-free viewing. Also, a Data Navigation Toolbar has been added to allow you to jump easily to any desired case of any specific variable. The SYSTAT interface and dialog boxes have been updated to give you a better overall user experience.

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