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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.

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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 2 of 10

Explore more Topics under R Programming

Q11.
Which of the following statement is invalid?

a.

x <- c(1+0i, 2+4i)

b.

x <- c(TRUE, FALSE)

c.

x <- c(T, F)

d.

None of the mentioned

Discuss
Answer: (d).None of the mentioned
Q12.
Point out the correct statement?

a.

Use explicit TRUE and FALSE values when indicating logical values

b.

rm command is used to remove objects in R

c.

R operates on named data structures

d.

All of the mentioned

Discuss
Answer: (d).All of the mentioned
Q13.
What will be the output of the following R code? 
> x <- 6
> class(x)

a.

“integer”

b.

“numeric”

c.

“real”

d.

“imaginary”

Discuss
Answer: (b).“numeric”
Q14.
What will be the output of the following R code? 
> x <- 0:6
> as.logical(x)

a.

FALSE TRUE TRUE TRUE TRUE TRUE TRUE

b.

“0” “1” “2” “3” “4” “5” “6”

c.

0 1 2 3 4 5 6

d.

6 5 5 3 2 1

Discuss
Answer: (a).FALSE TRUE TRUE TRUE TRUE TRUE TRUE
Q15.
Point out the correct statement?

a.

The usual operator, <-, can be thought of as a syntactic shortcut to expression operation

b.

Assignment can also be made using the function assignment()

c.

Vectors can be used in arithmetic expressions, in which case the operations are performed element by element

d.

seq() is used to delete the numbers

Discuss
Answer: (c).Vectors can be used in arithmetic expressions, in which case the operations are performed element by element
Q16.
Which of the following is invalid assignment?

a.

> c(10.4, 5.6, 3.1, 6.4, 21.7) -> x

b.

> assign("x", c(10.4, 5.6, 3.1, 6.4, 21.7))

c.

> x <- c(10.4, 5.6, 3.1, 6.4, 21.7)

d.

None of the mentioned

Discuss
Answer: (d).None of the mentioned
Q17.
What will be the output of the following R code? 
> sqrt(-17)

a.

-4.02

b.

4.02

c.

NaN

d.

3.67

Discuss
Answer: (c).NaN
Q18.
Which of the following code constructs vector of length 11?

a.

> v <- 3*x + y + 1

b.

> v <- 3*x + y + 2

c.

> v <- 2*x + y + 1

d.

> v <- 2*x + y + 4

Discuss
Answer: (c).> v <- 2*x + y + 1
Q19.
_______ function returns a vector of the same size as x with the elements arranged in increasing order.

a.

sort()

b.

orderasc()

c.

orderby()

d.

sequence()

Discuss
Answer: (a).sort()
Q20.
Which of the following is used for generating sequences?

a.

seq()

b.

sequence()

c.

order()

d.

orderasc()

Discuss
Answer: (a).seq()
Page 2 of 10

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