R programming

3 features of S that R also has

Conditionals , UDF, loops

Which GUI comes with installing R

RGui

Name an IDE for R

RStudio

10. who created R?

Ross Ihaka and Robert Gentelman (New Zealand)

7. R supports matrix operations.

True

In a R script, functions should be ____

Verbs

12. 3 OS where R can run on?

Windows, Mac, Unix

4. Is R open source?

Yes

How do you get a demo of R from command prompt?

demo()

How do you license information on R from command prompt?

license()

Vector is just a ____________

list

You have to end each command with semi-colon. T/F

no. just ENTER will do

is rGUI and rStudio same?

no. rStuido is IDE

function to read a text file

read.table

13. S is for:

serious statistics

2. R is both a _______ and _____________

software and language

How do you execute a .R file ?

source (file1.R)

default delimiter in text data file

space

What is S?

statistical system commonly used by statisticains

11. Where does the name "R" come from?

Ross and Robert

8. Name 5 data structures that R supports

Vectors, Matrices, Arrays, Data Frames, Lists

function to throw a graph

plot(a)

How to you get out of R command prompt?

type q()

Is R free?

yes

Is R object oriented?

yes

is R case sensitive?

yes

how to get out of + prompt?

Escape key

5. 3 main uses of R:

Programming, Statistics, Graphics

How do you get out of R console

Q

1. R is a system for statistical analyses and graphics created by ______ and ______________

Ross Ihaka and Robert Gentleman

3. R is considered as a dialect of the ______ language created by the AT&T Bell Laboratories

S

Files with R commands are written in plain text and saved as ______________

.R files

R script files are saved with what extension

.r

9. 3 objects that R supports:

1. Time-Series 2. Geo-spatial 3. Regression Model

How you install R on windows

Normal way

assign 5 to variable a

a <- 5

How do you start R on windows?

double click R on your desktop