R is a programming language and environment for statistical computing and graphics. It is widely used by statisticians and data miners for data analysis and predictive modeling. R is a free, open source software developed by the R Core Team. It is popular among statisticians and data miners because of its powerful and flexible statistical and graphical capabilities. It provides a wealth of statistical and graphical techniques, including linear and nonlinear modeling, classical statistical tests, time-series analysis, classification, clustering and more. Its interactivity, flexibility, and extensibility are ideal for addressing many data analysis challenges.