Welcome to STAT 484!

About this Course

Welcome to the course notes for STAT 484: Topics in R Statistical Language. These notes are designed and developed by Penn State's Department of Statistics and offered as open educational resources. These notes are free to use under Creative Commons license CC BY-NC 4.0.

This course is part of the Online Master of Applied Statistics program offered by Penn State's World Campus.

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If you are a current student in this course, please see Canvas for your syllabus, assignments, lesson videos and communication from your instructor.

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If you would like to enroll and experience the entire course for credit please see 'How to enroll in a course' on the World Campus website.

Since its release in 1997, R has emerged as a popular tool for statistical analysis and research. The flexibility and extensibility of R are key attributes that have driven its adoption. Some of the advantages of R are related to the command line interface (CLI) form in which it is used. However, this does add to the challenge of learning to use R. The goal of this course is to build familiarity with the basic R toolkit for statistical analysis and graphics.

R is a flexible and powerful toolkit, but the learning curve can be pretty steep, especially at first (I can remember quite well the frustration I experienced when I first started using R!). These lessons will teach many of the basic tools included in R, and teach you how to keep learning how to use R.

Remember that R is much more than a "statistical package" - R is a language. I find that I am less frustrated with some of the foibles of R when I remember that it is a language, and that while mastering a language takes years of study and practice, you can quickly learn the minimum that you need to do your simpler common tasks.

You can download R from CRAN (the Comprehensive R Archive Network).

I also suggest that you download and install RStudio, which creates a nicer user interface for R. RStudio is not necessary, but once you have used it, you probably won't want to use R without it. Note: If you dont have privileges to install RStudio in lab PCs, it may be possible to install it on a USB drive.

You will need to download, and likely print, the course notes (Essential R) which are found on Essential R Notes page.

This course will continue into STAT 485: Topics in R Statistical Language.