adplus-dvertising

Welcome to the Data Types and Dataset Reading MCQs Page

Dive deep into the fascinating world of Data Types and Dataset Reading with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Data Types and Dataset Reading, a crucial aspect of R Programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of Data Types and Dataset Reading, 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.

frame-decoration

Check out the MCQs below to embark on an enriching journey through Data Types and Dataset Reading. 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 Data Types and Dataset Reading. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Data Types and Dataset Reading MCQs | Page 3 of 10

Explore more Topics under R Programming

Q21.
Which of the following statement would print “0” “1” “2” “3” “4” “5” “6” for the following R code?

a.

as.character(x)

b.

as.logical(x)

c.

as.numeric(x)

d.

as.num(y)

Discuss
Answer: (a).as.character(x)
Q22.
Point out the correct statement?

a.

rep() is be used for replicating an object in various complicated ways

b.

seq() function has four arguments

c.

sequence() is a more general facility for generating sequences

d.

numerical vectors are generated by conditions

Discuss
Answer: (a).rep() is be used for replicating an object in various complicated ways
Q23.
What will be the output of the following R code? 
x <- c("a", "b", "c")
> as.numeric(x)

a.

Warning

b.

Error

c.

Abnormal termination

d.

Prints x

Discuss
Answer: (a).Warning
Q24.
What will be the output of the following R code? 
> x <- c("a", "b", "c")
> as.logical(x)

a.

a b c

b.

NA NA NA

c.

0 1 2

d.

6 8 9

Discuss
Answer: (b).NA NA NA
Q25.
Point out the correct statement?

a.

The elements of a logical vector cannot have the values TRUE, FALSE, and NA

b.

Matrices are vectors with a dimension attribute

c.

Numerical vectors are generated by conditions

d.

seq() function has four arguments

Discuss
Answer: (b).Matrices are vectors with a dimension attribute
Q26.
What will be the output of the following R code? 
> m <- matrix(nrow = 2, ncol = 3)
 > dim(m)

a.

3 2

b.

2 3

c.

2 2

d.

4 5

Discuss
Answer: (b).2 3
Q27.
What will be the output of the following R code? 
> m <- matrix(1:6, nrow = 2, ncol = 3)
> m

a.

[,1] [,2] [,3]
[1,] 1 3 5
[2,] 2 4 6

b.

[,0] [,1] [,2]
[1,] 1 3 5
[2,] 2 4 6

c.

[,1] [,2] [,3]
[1,] 1 3 6
[2,] 2 4 5

d.

[,5] [,6] [,7]
[1,] 1 3 6
[2,] 2 4 5

Discuss
Answer: (a).[,1] [,2] [,3]
[1,] 1 3 5
[2,] 2 4 6
Q28.
What will be the output of the following R code? 
> m <- 1:10
> m

a.

1 2 3 4 5 6 7 8 9 10

b.

1 2 3 4 5 6 7 8 9 10 11

c.

0 1 2 3 4 5 6 7 8 9 10

d.

10 9 8 6 5 4 2 3 1 2

Discuss
Answer: (a).1 2 3 4 5 6 7 8 9 10
Q29.
What will be the output of the following R code? 
> x <- 1:3
> y <- 10:12
> cbind(x, y)

a.

x y
[1,] 6 10
[2,] 7 11
[3,] 8 12

b.

x y
[1,] 1 10
[2,] 2 11
[3,] 3 12

c.

x y
[1,] 1 4
[2,] 2 5
[3,] 3 6

d.

x y
[1,] 1 6
[2,] 2 5
[3,] 3 10

Discuss
Answer: (b).x y
[1,] 1 10
[2,] 2 11
[3,] 3 12
Q30.
Find the following type of vector? 
a <- c(1,2,5.3,6,-2,4)

a.

Numeric

b.

Character

c.

Integer

d.

Logical

Discuss
Answer: (a).Numeric
Page 3 of 10

Suggested Topics

Are you eager to expand your knowledge beyond R Programming? We've curated a selection of related categories that you might find intriguing.

Click on the categories below to discover a wealth of MCQs and enrich your understanding of Computer Science. Happy exploring!

CSS

Polish your web design skills with our CSS MCQs. Learn about selectors, properties,...

Data Warehousing and OLAP

Strengthen your knowledge of Data Warehousing and OLAP with our specialized MCQs....

Cyber Security

Understand the fundamentals of safeguarding digital assets with our Cyber Security...

HTML

Start your journey in web development with our HTML MCQs. Learn the building blocks...

C# programming

Hone your skills in the C# language with our MCQs. Understand data types, operators,...

Digital Communication

Master the basics of electronic communication with our Digital Communication MCQs....

Digital Image Processing (DIP)

Delve into the techniques of enhancing digital images with our Digital Image...

Data Science

Discover the fascinating world of extracting insights from data with our Data Science...

Systems Analysis and Design Methods

Get familiar with the process of designing and improving business systems with our...