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Welcome to the Control Structures and Functions MCQs Page

Dive deep into the fascinating world of Control Structures and Functions with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Control Structures and Functions, a crucial aspect of R Programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of Control Structures and Functions, 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 Control Structures and Functions. 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 Control Structures and Functions. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Control Structures and Functions MCQs | Page 9 of 13

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Q81.
If the programmers want the output to be a data frame or a vector, then ________ function is used.

a.

Lapply

b.

Sapply

c.

Vapply

d.

Zapply

Discuss
Answer: (a).Lapply
Q82.
If a programmer wants the output to be a list then ___________ function is used.

a.

Lapply

b.

Sapply

c.

Vapply

d.

Zapply

Discuss
Answer: (b).Sapply
Q83.
_____________ function is preferred over sapply as vapply allows the programmer to specific the output type.

a.

Lapply

b.

Japply

c.

Vapply

d.

Zapply

Discuss
Answer: (c).Vapply
Q84.
Which function is difficult to implement?

a.

Lapply

b.

Japply

c.

Vapply

d.

Zapply

Discuss
Answer: (c).Vapply
Q85.
Which function is more verbose?

a.

Lapply

b.

Japply

c.

Vapply

d.

Zapply

Discuss
Answer: (c).Vapply
Q86.
_____________ will produce a sequential vector c( (1,2,3,4,5,6,7,8,9)).

a.

Seq(9)

b.

Seq(10)

c.

Seq(15)

d.

Seq(12)

Discuss
Answer: (a).Seq(9)
Q87.
__________ function is used for reading the .csv file in R language.

a.

Write.csv()

b.

Read.csv ()

c.

Let.csv()

d.

Table.csv()

Discuss
Answer: (b).Read.csv ()
Q88.
The line of code in R language should begin with a ________________

a.

Hash symbol

b.

Alphabet

c.

Number

d.

Character

Discuss
Answer: (a).Hash symbol
Q89.
_______________ returns TRUE then X can be termed as a matrix data object.

a.

is.”matrix(X”)

b.

is.matrix(X)

c.

is.notamatrix(X )

d.

is.matrix(“X”)

Discuss
Answer: (b).is.matrix(X)
Q90.
If two vectors with different lengths perform some operation, the elements of the shorter vector will be used again to complete the operation. This is referred to as _________________

a.

Element Recycling

b.

Recycling

c.

Cycling

d.

Element Cycling

Discuss
Answer: (a).Element Recycling
Page 9 of 13

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