Introduction to R.pptxvvvsjtajtaitsiysyisiysiy

KgzkgzkhzkhKgzkgskysoyskyskysluslusluslusoudoudousousoudlusludludluduldludlusousludoyduodoudkuskhdkuskydkydoudousoysoudoudousousousousousoudoudoueousoudoudoudousousuodludoudoudkudkudoudouskhdohxkhxkkhchkxohxodoudkhdiysiydiydiyoxoydodiydoudousoydoydoydoydoudodoydoydoodiyddoydoododydoyyydoyoysoysiysyisiysiysoysyoysoyddxkysdkzkgzkhsiysiyshkxkydyidosiysyskyzjgxitsisisysidoysiyitsidoysiyiysiysiysiysiysiysiysoysiysiyoysiysiyskysyioyiysoysiysoysiysoysoysiysiydkydoydoydoysoydoydoysoysoydiysiysiysjssiydykdd

1. Introduction to R By: Dr. Preeti Jindal Associate Professor TIAS

2. What is R WHAT IS R? R is both a programming language and software environment for statistical computing, R is a free, open source software program for statistical analysis.

3. How to Start R To get started, you will need to install two pieces of software: • R, the actual programming language. – Chose your operating system, and select the most recent version, 4.2.1. • RStudio , an excellent IDE for working with R. – Note, you must have R installed to use RStudio . RStudio is simply an interface used to interact with R.

4. R is used both for software development and data analysis.

5. Why use R Free and open source. Available for Windows, Macintosh, and Linux. Publication-quality graphs. Rivals (and in many cases, exceeds) SAS and Stata in terms of availability of advanced statistical methods and algorithms, through availability of user-created packages. Packages for  literate statistical programming  - weaving written reports and analysis code in one document.

6. WHAT IS RSTUDIO? RStudio is a free, open source IDE (integrated development environment) for R. (You must install R before you can install RStudio .) Its interface is organized so that the user can clearly view graphs, data tables, R code, and output all at the same time. It also offers an Import-Wizard-like feature that allows users to import CSV, Excel, SAS (*.sas7bdat), SPSS (*.sav), and Stata (*.dta) files into R without having to write the code to do so.

7. WHAT FILE TYPES ARE TYPICALLY ASSOCIATED WITH R? *.r  - An R script. *.rmd  - An R Markdown file. *.rnw  - An R Sweave file. *.rds  - A file containing a [single] R object; can be created using  saveRDS (), and loaded using  readRDS (). *. rdata  - A file containing one or more R objects or workspaces; can be created using save(), and loaded using load().

8. How can I access R? R and RStudio are free and open-source. To install them on any computer, download the software from their respective websites.

9. Package required Readxl : to import excel file in r-studio Readr : to import csv and text file in r-studio Rjson : to import JSON file in r-studio XML: to import html table in r-studio Haven: to import SAS file in r-studio Haven: to import SPSS file in r-studio