R is a tool for statistics and data modeling. The R programming language is elegant, versatile, and has a highly expressive syntax designed around working with data. R is more than that, though — it also includes extremely powerful graphics capabilities. If you want to easily manipulate your data and present it in compelling ways, R is the tool for you.
Start the Course
Table of Contents

R Syntax:
A gentle introduction to R expressions, variables, and functions

Vectors:
Grouping values into vectors, then doing arithmetic and graphs with them

Matrices:
Creating and graphing twodimensional data sets

Summary Statistics:
Calculating and plotting some basic statistics: mean, median, and standard deviation

Factors:
Creating and plotting categorized data

Data Frames:
Organizing values into data frames, loading frames from files and merging them

Working With RealWorld Data:
Testing for correlation between data sets, linear models and installing additional packages