The post is about R Language Basics and R Language Frequently Asked Questions. The contents are in the form of questions and answers. Let us start with R Language Basics Questions and Answers.

## Table of Contents

### R Basics

**Question:** How to start (Run) R Language in the Windows Operating System?**Answer:** In Microsoft Windows, during installation, the R installer will have created a Start menu item and an icon for R on your system’s desktop. Double-click the R icon from the desktop or the start menu list to Run the R program.

For Windows 7, 8, or 10, you can use a search term like “R x64 3.2.1” (64-bit version) or “R i386 3.2.1” (32-bit version). R GUI will launch.

### Using R as a Calculator

**Question:** How R can be used as a calculator?**Answer:** One can easily use R as a calculator. Starting R will open the console where the user can type commands. To use R as a calculator one has to enter the arithmetical expression after > prompt. For example

5 + 4 sqrt(37) 2*4^2+17*4-3

### R Workspace

**Question:** What is * a workspace* in R?

**Answer:**The

*in R is an image that contains a record of the computations one has done and it may contain some saved results.*

**workspace****Question:** How to record works[ace in R?**Answer:** Rather than saving the * workspace,* one can record all the commands that one has entered in the R console. Recording work in R, the R

*can be reproduced. The easiest way is to enter the commands in R’s script editor available in the File menu of R GUI.*

**workspace**### R Script Editor

**Question:** What is * R Script Editor*?

**Answer:**The r script editor is a place where one can enter commands. Commands can be executed by highlighting them and hitting

**CTRL+R**(mean RUN). At the end of an R session, one can save the final script for a permanent record of one’s work.

A text editor such as Notepad can also be used for this purpose.

Note that in the R console, only one command can be entered at a time because after pressing the Enter key the R command executed immediately.

### Quitting R Session

**Question:** How to quit the R session?

Answer: In the R console on the R command prompt just type

q( )

**Question:** What is *q()*?**Answer:** The *q()* is a function that is used to tell R to quit. When *q()* is entered in the R console and press the Enter key, you will be asked whether to save an image of the current ** workspace** or not or to cancel. Note that only typing

*q*tells R to show the content of this function. The action of this function is to quit R.

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