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**1/1/2011 Update:** Tal Galili wrote an article that revisits the first year of R-Bloggers and this post was listed as one of the top 14. Therefore, I decided to make a small update to each section. I start by describing the initial series of tutorials that I wrote. A few more have been added since and even more planned in the upcoming year. As always, an up to date listing of my articles can be found on the R Tutorial Series blog. New posts will also continue to be offered through the R Bloggers network.

Since October 2009, I have written 13 articles [many more now, of course] for the R Tutorial Series blog. The first two introduce new users to R. The remaining 11 cover a wide range of topics related to multiple regression and correlation. This collection of tutorials represents my most recent training in statistics. Thus, for the time being, I will not be contributing new articles as frequently as I have over the past few months. However, I will undoubtedly encounter future projects that require new statistical methods and partake in more statistics courses, both of which will provide additional tutorial material. Below is a categorized list of the articles currently offered in the R Tutorial Series.

Introduction to R

Descriptive Statistics

Data Visualization

Correlation

Regression

- Simple Linear Regression
- Multiple Linear Regression
- Regression Assumptions
- Regression with Interaction Variables
- Regression with Categorical Variables
- Polynomial Regression
- Hierarchical Linear Regression

I also have two additional R-related items to update you on. The first is the R Bloggers website and the second is my R Beginner’s Guide.

**1/1/2011 Update:** I originally reported that 50 blogs composed the R Bloggers network. Now that number has risen to over 140. I hope that R Bloggers continues to thrive and contribute to the R community.

### R Tutorial Series on R Bloggers

R Bloggers (https://www.r-bloggers.com) is a website that aggregates over 50 different blogs that focus on R. It is an excellent resource for keeping up to date on the many uses of R and for learning about the wide range of work being conducted in R. I recommend using R Bloggers for these purposes. The R Tutorial Series was invited to participate in the R Bloggers collection and is now available to R Bloggers’ readers.

### R Beginner’s Guide

**11/1/2010 Update:** *Statistical Analysis with R* is now available!

Lastly, I want to let you know that I am working on a beginner’s guide for R. It is primarily focused towards introducing R to information technology, business, and data analyst professionals. The book will be offered through PACKT Publishing (http://www.packtpub.com) and should be available within the next year. If you have enjoyed the R Tutorial Series, then you may be interested in looking for the guide once it is completed. In the meantime, keep reading the R Tutorial Series and R Bloggers and I will keep you updated on the book’s major milestones.

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