R Programming Basics MCQ question and answer with solution

1.
Which function can be used to determine the names assigned to a list?

A. Names

B. Name

C. Nam

D. Nem

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2.
The length of a list is . . . . . . . . to the number of components in that list.

A. Double

B. Equal

C. Triple

D. One fourth

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3.

What will be the output of the following R code?

> x <- 1:3
> names(x)

A. NULL

B. 1

C. 2

D. 4.5

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4.

Find the following type of vector?

a <- c(1,2,5.3,6,-2,4)

A. Numeric

B. Character

C. Integer

D. Logical

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5.
Point out the correct statement?

A. Using factors with labels is better than using integers because factors are self-describing

B. Factors are used to represent categorical data and can be unordered or ordered

C. Factors are important in statistical modeling and are treated specially by modelling functions like lm() and glm()

D. All of the mentioned

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6.
Density function gives output as . . . . . . . .

A. Matrix

B. Lists

C. Vector

D. Number

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7.
Which of the following code snippet will create a vector with NAs in it?

A. x >- c(1, 2, NA, 10, 3)

B. x >- cNA(1, 2, NA, 10, 3)

C. x >- NA(1, 2, NA, 10, 3)

D. x >- NA(1, 5, NA, 10, 8)

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8.
What is the simplest way of creating the vector?

A. C function

B. Create

C. Destroy

D. Invalid

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9.
. . . . . . . . provides optional labels with the columns and rows.

A. Disnames

B. Dimnames

C. Denmes

D. Demnesd

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10.
Point out the correct statement?

A. Empty vectors can be created with the vector() function

B. A sequence is represented as a vector but can contain objects of different classes

C. "raw" objects are commonly used directly in data analysis

D. The value NaN represents undefined value

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1.
Which function can be used to determine the names assigned to a list?

Answer & Solution

2.
The length of a list is . . . . . . . . to the number of components in that list.

Answer & Solution

3.
What will be the output of the following R code?

`> x <- 1:3 > names(x)`

Answer & Solution

4.
Find the following type of vector?

`a <- c(1,2,5.3,6,-2,4)`

Answer & Solution

5.
Point out the correct statement?

Answer & Solution

6.
Density function gives output as . . . . . . . .

Answer & Solution

7.
Which of the following code snippet will create a vector with NAs in it?

Answer & Solution

8.
What is the simplest way of creating the vector?

Answer & Solution

9.
. . . . . . . . provides optional labels with the columns and rows.

Answer & Solution

10.
Point out the correct statement?

Answer & Solution

Read More Section(R Programming Basics)

R Programming Basics MCQ question and answer with solution | R Programming MCQs

1. Which function can be used to determine the names assigned to a list?

Answer & Solution

2. The length of a list is . . . . . . . . to the number of components in that list.

Answer & Solution

3. What will be the output of the following R code? > x <- 1:3 > names(x)

Answer & Solution

4. Find the following type of vector? a <- c(1,2,5.3,6,-2,4)

Answer & Solution

5. Point out the correct statement?

Answer & Solution

6. Density function gives output as . . . . . . . .

Answer & Solution

7. Which of the following code snippet will create a vector with NAs in it?

Answer & Solution

8. What is the simplest way of creating the vector?

Answer & Solution

9. . . . . . . . . provides optional labels with the columns and rows.

Answer & Solution

10. Point out the correct statement?

Answer & Solution

Read More Section(R Programming Basics)

1.
Which function can be used to determine the names assigned to a list?

2.
The length of a list is . . . . . . . . to the number of components in that list.

3.
What will be the output of the following R code?

`> x <- 1:3 > names(x)`

4.
Find the following type of vector?

`a <- c(1,2,5.3,6,-2,4)`

5.
Point out the correct statement?

6.
Density function gives output as . . . . . . . .

7.
Which of the following code snippet will create a vector with NAs in it?

8.
What is the simplest way of creating the vector?

9.
. . . . . . . . provides optional labels with the columns and rows.

10.
Point out the correct statement?