R

1. Follow this link to the Iowa State University R mirror.

2. Select the download option based on your computer’s operating system; the download will take about 30 minutes.

3. Once it is complete, open the downloaded file to install, and respond to the questions. Installation will take about 5 minutes.

4. In one of your assignments, you need the plotrix package. To install this, open an R console window and enter the command: install.packages(“plotrix”)

5. You’ll see the statement “Please select a CRAN mirror for use in this session” and a window will appear. Scroll down and select USA (IA) [https].

6. When you want to use this package in an R session, include the command require(plotrix)