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Welcome to the Basics of R Programming Language MCQs Page

Dive deep into the fascinating world of Basics of R Programming Language with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Basics of R Programming Language, a crucial aspect of R Programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of Basics of R Programming Language, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within R Programming.

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Check out the MCQs below to embark on an enriching journey through Basics of R Programming Language. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of R Programming.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Basics of R Programming Language. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Basics of R Programming Language MCQs | Page 7 of 8

Explore more Topics under R Programming

Q61.
If commands are stored in an external file, say commands.R in the working directory work, they may be executed at any time in an R session with the command ____________

a.

source(“commands.R”)

b.

exec(“commands.R”)

c.

execute(“commands.R”)

d.

exect(“command.R”)

Discuss
Answer: (a).source(“commands.R”)
Q62.
_______ will divert all subsequent output from the console to an external file.

a.

sink

b.

div

c.

exp

d.

exc

Discuss
Answer: (a).sink
Q63.
The entities that R creates and manipulates are known as ________

a.

objects

b.

task

c.

container

d.

packages

Discuss
Answer: (a).objects
Q64.
Which of the following can be used to display the names of (most of) the objects which are currently stored within R?

a.

object()

b.

objects()

c.

list()

d.

class()

Discuss
Answer: (b).objects()
Q65.
Collection of objects currently stored in R is called as ________________

a.

Package

b.

workspace

c.

list

d.

task

Discuss
Answer: (b).workspace
Q66.
What will be the output of the following R function? 
ab <- list(1, 2, 3, "X", "Y", "Z")
dim(ab) <- c(3,2)
print(ab)

a.

1 “X”
2 “Y”
3 “ Z”

b.

1 “X”
2 “Y”
3 “ Y”

c.

1 “W”
2 “Y”
3 “ Z”

d.

Error

Discuss
Answer: (a).1 “X”
2 “Y”
3 “ Z”
Q67.
What is the meaning of the following R function? 
x <- c(4, 5, 1, 2, 3, 3, 4, 4, 5, 6)
x <- as.factor(x)

a.

x becomes a factor

b.

x is a factor

c.

x does not exist

d.

x is not a vector

Discuss
Answer: (a).x becomes a factor
Q68.
What is the meaning of the following R function? 
print( sqrt(2) )

a.

1.414314

b.

1.414214

c.

Error

d.

14.1414

Discuss
Answer: (b).1.414214
Q69.
What will be the output of the following R function? 
d <- date()
D

a.

Prints todays date

b.

Prints some date

c.

Prints exact present time and date

d.

Error

Discuss
Answer: (c).Prints exact present time and date
Q70.
What will be the output of the following R function? 
paste("Everybody", "is", “a” , "warrior")

a.

“Everybody”, “is”, “a” , “warrior”

b.

Everybody is a warrior

c.

Everybody”, “is”, “a” , “warrior

d.

“Everybody is a warrior”

Discuss
Answer: (d).“Everybody is a warrior”
Page 7 of 8

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