R (Software)

Abstract

R is a programming language and a freely available open-source software environment for statistical analyses and graphics (see http://www.r-project.org/). Besides being free and open-source, R has recently seen a surge in popularity mainly for its graphical capabilities for producing publication-ready tables and figures, and its functionalities for advanced multivariate analyses, such as structural equation and multilevel modeling. Graphical user interfaces (GUIs), such as RStudio ( http://www.rstudio.com/), can facilitate the use of R for users who are more familiar with statistical packages like SPSS, SAS, or Stata.