Installing R and R Studio Basic functionality of R, variable, data types in R. R programming language is a language and free software environment, available under GNU license, supported by R Foundation for Statistical Computing. The language is most widely known for its powerful statistical and data interpretation capabilities. To use R language, you need the R environment to be installed on your machine, and an IDE (Integrated development environment) to run the language (can also be run using CMD on Windows or Terminal on Linux). Installing R Studio on Window To Install R Studio on windows we will follow the following steps. Step 1: First, you need to set up an R environment in your local machine. You can download the same from r-project.org. Step 2: After downloading R for the Windows platform, install it by double-clicking it. Step 3: Download R Studio from their official page. Note: It is free of cost (under AGPL licensing). R Programming Laboratory Manual Department of CSE(AI), PEC 3 Step 4: After downloading, you will get a file named “RStudio-1.x.xxxx.exe” in your Downloads folder. Step 5: Double-click the installer, and install the software. Step 6: Test the R Studio installation  Search for RStudio in the Window search bar on Taskbar.  Start the application.  Insert the following code in the console. R Programming Laboratory Manual Department of CSE(AI), PEC 4 Input : print('Hello world!') Output : [1] "Hello world!" Step 7: Your installation is successful. Variables in R R Programming Language is a dynamically typed language, i.e. the R Language Variables are not declared with a data type rather they take the data type of the R-object assigned to them. This feature is also shown in languages like Python and PHP. Declaring and Initializing Variables in R Language R supports three ways of variable assignment:  Using equal operator- operators use an arrow or an equal sign to assign values to variables.  Using the leftward operator- data is copied from right to left.  Using the rightward operator- data is copied from left to right.  Using equal to operators variable_name = value  using leftward operator variable_name <- value  using rightward operator value -> variable_name Creating Variables in R # R program to illustrate # Initialization of variables # using equal to operator var1 = "hello" print(var1) # using leftward operator var2 <- "hello" print(var2) # using rightward operator "hello" -> var3 print(var3) Output: [1] "hello" [1] "hello" [1] "hello"