R Reference Card (PDF)

May 5, 2009

(This article was first published on Getting Genetics Done, and kindly contributed to R-bloggers)

Last week I posted a short tutorial on how to merge datasets using R. R is a free and open-source statistical computing software and programming language (get R here). The only downside is a steeper learning curve because the documentation is sparse and often difficult to understand at first. Once you start using it, you’ll realize it can do anything SPSS, SAS, and Stata can do, and its

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