Join Barton Poulson for an in-depth discussion in this video Installing R on your computer, part of Learning R.
R is a free download that's available for Windows, Mac, and Linux computers, and installation is a simple process. The first thing you need to do is go to the R Web site; that's r-project.org. From there, you can scroll down to where it says Getting Started, and you see download R. I'm going to click on that right now. When you click on that, you get to choose what's called a CRAN Mirror. CRAN stands for the Comprehensive R Archive Network, and what these are are servers that have identical copies of all of the R information, and it's usually helpful to find one that is physically close to you.
I'm going to scroll down to the United States, and I'm close to UCLA right now, so I'm going to click on that one. From there, you have three choices, depending on the operating system of your machine. You can download R for Linux, for Mac or for Windows, and most people will be downloading R for Windows. Let's click on that one first. From there you have a few different choices. The one that most people are going to want is base, and then you can simply download it by clicking on that top link.
I'm going to back up and show you the Mac version. If you click on Mac, then the one that you want is this one right here that says package. R2.15.2 is the current version. Then one more; I'll back up, and for Linux users, the version that you download depends on the distribution of Linux that you're using.
The course continues with examples on how to create charts and plots, check statistical assumptions and the reliability of your data, look for data outliers, and use other data analysis tools. Finally, learn how to get charts and tables out of R and share your results with presentations and web pages.
- What is R?
- Installing R
- Creating bar character for categorical variables
- Building histograms
- Calculating frequencies and descriptives
- Computing new variables
- Creating scatterplots
- Comparing means