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R Project

R is an open source language and environment for statistical computing and graphics that provides a wide variety of statistical (linear and nonlinear modelling, classical statistical tests, time-series analysis, classification, clustering, ...) and graphical techniques.  Many users think of R as a statistics system, however R developers prefer to think of it of an environment within which statistical techniques are implemented. R can be extended (easily) via packages. For more information, downloads, manuals and the open source R Journal visit the R Project Home Page.