R Programming Basics MCQ question and answer with solution

51.
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

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52.
To bind a row onto an already existing matrix, the . . . . . . . . function can be used.

A. Rbind

B. Sbnd

C. Gbind

D. Sbind

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53.
vectors can be one of two types namely atomic vectors and . . . . . . . .

A. Matrix

B. Vector

C. Lists

D. Array

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54.
A . . . . . . . . is a set of elements appearing in rows and columns where the elements are of the same mode whether they are logical, numeric (integer or double), complex or character.

A. Vector

B. Matrix

C. Lists

D. Data frames

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55.
Which function replicates elements of vectors?

A. C

B. Rep

C. Crep

D. Grep

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56.
Which of the following statement changes column name to h and f?

A. colnames(m) <- c("h", "f")

B. columnnames(m) <- c("h", "f")

C. rownames(m) <- c("h", "f")

D. rownames(m) <- c("f", "f")

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57.
Which of the following is a 3-dimensional dataset?

A. Eris

B. Iris

C. Toris

D. Iris

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58.

What will be the output of the following R code?

> sqrt(-17)

A. -4.02

B. 4.02

C. NaN

D. 3.67

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59.

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

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60.
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

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51.
Point out the correct statement?

Answer & Solution

52.
To bind a row onto an already existing matrix, the . . . . . . . . function can be used.

Answer & Solution

53.
vectors can be one of two types namely atomic vectors and . . . . . . . .

Answer & Solution

54.
A . . . . . . . . is a set of elements appearing in rows and columns where the elements are of the same mode whether they are logical, numeric (integer or double), complex or character.

Answer & Solution

55.
Which function replicates elements of vectors?

Answer & Solution

56.
Which of the following statement changes column name to h and f?

Answer & Solution

57.
Which of the following is a 3-dimensional dataset?

Answer & Solution

58.
What will be the output of the following R code?

`> sqrt(-17)`

Answer & Solution

59.
What will be the output of the following R code?

`> x <- 1:3 > y <- 10:12 > cbind(x, y)`

Answer & Solution

60.
Which of the following statement is invalid?

Answer & Solution

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

51. Point out the correct statement?

Answer & Solution

52. To bind a row onto an already existing matrix, the . . . . . . . . function can be used.

Answer & Solution

53. vectors can be one of two types namely atomic vectors and . . . . . . . .

Answer & Solution

54. A . . . . . . . . is a set of elements appearing in rows and columns where the elements are of the same mode whether they are logical, numeric (integer or double), complex or character.

Answer & Solution

55. Which function replicates elements of vectors?

Answer & Solution

56. Which of the following statement changes column name to h and f?

Answer & Solution

57. Which of the following is a 3-dimensional dataset?

Answer & Solution

58. What will be the output of the following R code? > sqrt(-17)

Answer & Solution

59. What will be the output of the following R code? > x <- 1:3 > y <- 10:12 > cbind(x, y)

Answer & Solution

60. Which of the following statement is invalid?

Answer & Solution

Read More Section(R Programming Basics)

51.
Point out the correct statement?

52.
To bind a row onto an already existing matrix, the . . . . . . . . function can be used.

53.
vectors can be one of two types namely atomic vectors and . . . . . . . .

54.
A . . . . . . . . is a set of elements appearing in rows and columns where the elements are of the same mode whether they are logical, numeric (integer or double), complex or character.

55.
Which function replicates elements of vectors?

56.
Which of the following statement changes column name to h and f?

57.
Which of the following is a 3-dimensional dataset?

58.
What will be the output of the following R code?

`> sqrt(-17)`

59.
What will be the output of the following R code?

`> x <- 1:3 > y <- 10:12 > cbind(x, y)`

60.
Which of the following statement is invalid?