Recent statistical software
Behavior Research Methods, Instruments, & Computers · 1991
Recent Statistical SoftwareThe following infonnation is from press releases or other material provided by publishers.DOS SYSTAT Version 5.0 SYSTAT, Inc., announces the release ofSYSTAT Version 5.0, a comprehensive statistical analysis, data management, and graphics software package for ffiM PCIATs and DOS-compatible systems with 640K RAM and a hard disk.SYSTAT Version 5.0 integrates graphics and analysis procedures through its menu-driven interface.New pulldown hierarchical menus organize procedures intuitively, with a command window available at any time should the user wish to edit commands.Context-sensitive help is available throughout.All graphics procedures support color output, with default settings fully controllable by the user.In addition to standard graphs, plots, bar charts, histograms, and scatterplots, DOS SYSTAT 5.0 features graphs rarely found in other commercial packages.The new version incorporates all the features of SYGRAPH plus new graphs.These include spherical mapping, dot plots that display densities, arrow or vector plots for fluid flow and other problems, and weathervane plots.SYSTAT offers a spinning procedure that enables users to visualize data in 3-D space.Superscripts, subscripts, overstrikes, and embedded font changes for scientific equations and other specialized typesetting are available everywhere text can be written.DOS SYSTAT 5.0 also supplies its own device drivers for the most common printers and output devices.Major statistical improvements include enhancements to model estimation and hypothesis testing (MGLH) with support of the means model.This model is useful for designs that have missing cells or cells with unequal n values that reflect population differences.Stepwise regression output now has options for forward, backward, and interactive stepping.Additional hypothesis tests include an intuitive method for arbitrary contrasts of effects or means, and new post hoc methods: Scheffe, Dunnett one-and two-sided, Bonferroni, Fisher's LSD, and Tukey-Kramer.Post hoc methods are now automatic with one-way or factorial designs.Other statistical procedures include descriptive statistics, frequency distributions, t tests, cluster analysis, analysis of variance, multidimensional scaling, nonparametric statistics, repeated measures, correlations, simple linear and multiple linear regression, forecasting and exponential smoothing, common factor analysis, and nonlinear regression.DOS SYSTAT 5.0 has the capacity to analyze between 125 and 250 variables, depending on procedure.85 Documentation for DOS SYSTAT 5.0 is entirely rewritten and is in four paperback manuals-Getting Staned, Data, Graphics, and Statistics.Each chapter introduces the statistical concepts behind the procedure, with stepby-step instructions and examples.Tips and shortcuts give hints that make new users productive quickly.SYSTAT Version 5.0 requires an ffiM-eompatible system running MS/PC-DOS 3.0 or higher, with 640K RAM