file extension GPH

Stata

Stata is a complete, integrated statistical package that provides everything you need for data analysis, data management, and graphics. It is designed for researchers of all disciplines, or check out our other products, including books, journals, and training courses.

Fast, accurate, and easy to use
With a point-and-click interface, an intuitive command syntax, and online help, Stata is easy to use, fast, and accurate.

Broad suite of statistical capabilities
Stata puts hundreds of statistical tools at your fingertips, from advanced techniques, such as survival models with frailty, dynamic panel data (DPD) regressions, generalized estimating equations (GEE), multilevel mixed models, models with sample selection, ARCH, and estimation with complex survey samples; to standard methods, such as linear and generalized linear models (GLM), regressions with count or binary outcomes, ANOVA/MANOVA, ARIMA, cluster analysis, standardization of rates, case–control analysis, and basic tabulations and summary statistics.

Complete data-management facilities
You can combine and reshape datasets, manage variables, and collect statistics across groups or replicates. You can work with byte, integer, long, float, double, and string variables.

Publication-quality graphics
Stata makes it easy to generate publication-quality, distinctly styled graphs, including regression fit graphs, distributional plots, time-series graphs, and survival plots.

Responsive and extensible
Stata is so programmable that developers and users add new features every day to respond to the growing demands of today's researchers.

Matrix programming—Mata
Mata is both an interactive environment for manipulating matrices and a full development environment that can produce compiled and optimized code.

Cross-platform compatible
Stata is available for Windows, Macintosh, and Unix computers (including Linux).

Complete documentation and other publications
Stata comes with a complete set of documentation, including a Base Reference Manual with more than 1,800 pages of information that includes calculation formulas, detailed examples, and references to the statistics literature.

Technical support and learning resources
Excellent technical support is free to registered users of Stata.

Widely used
Stata is distributed in more than 150 countries and is used by professionals in many fields of research.

Affordable
Stata offers several purchase options to fit your budget.