# Introduction to R

*2020-08-31*

# Introduction

In this induction session we introduce the statistical computer software **R**, which can be used to undertake statistical analyses. Statistical analyses are conducted using a computer because it is much quicker and makes fewer errors than a human. There are numerous programs that can be used for statistical analysis, including; **Excel (limited)**, **Minitab**, **R**, **SAS**, **SPSS**, **STATA**. In this course we use **R** because it:

- is widely used by professional statisticians;
- can implement a wide range of simple and advanced statistical methods; and
- is free, so you can download it at home.

The one downside of using **R** is that the user-interface is not very user-friendly, so a user-interface called **RStudio** was developed. Thus, the software you will use is **R** with a user-interface called **RStudio**. In this introduction we will use **R** via **RStudio**, but you can use **R** on its own. Both these pieces of software are freely available to download from the following websites.

**R**is available to download from http://www.r-project.org.**RStudio**is available to download from http://www.rstudio.org.

Note, **R** can be used without the **RStudio** user-interface, but you cannot use **RStudio** without having first installed **R**.