R Programming MCQ Questions with answers and solutions Page 48

Q. . . . . . . . . initiates an infinite loop right from the start.

(A) never
(B) repeat
(C) break
(D) set

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✅ Correct Answer: (B) repeat

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:12 am in R Programming

Q. What will be the output of runif()?

(A) Random number
(B) Numbers
(C) Character
(D) Path generation

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✅ Correct Answer: (A) Random number

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:12 am in R Programming

Q. What will be the output of the following R code snippet?
> g <- function(x) {
+ a <- 3
+ x+a+y
+ ## 'y' is a free variable
+ }
> g(2)

(A) 9
(B) 42
(C) 8
(D) Error

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✅ Correct Answer: (D) Error

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:12 am in R Programming

Q. . . . . . . . . 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)

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✅ Correct Answer: (A) Seq(9)

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:12 am in R Programming

Q. What are the different types of sorting algorithms available in R language?

(A) Bubble
(B) Selection
(C) Merge
(D) All sorts

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✅ Correct Answer: (D) All sorts

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:12 am in R Programming

Q. Which function calculates the count of each category of a categorical variable?

(A) Table
(B) Intact
(C) Tables
(D) Retabs

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✅ Correct Answer: (A) Table

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:12 am in R Programming

Q. . . . . . . . . applies a function over the margins of an array.

(A) apply()
(B) lapply()
(C) tapply()
(D) mapply()

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✅ Correct Answer: (A) apply()

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:12 am in R Programming

Q. The syntax of the for loop is?

(A) for ( $name in vector ) statement1
(B) for loop( name in vector ) statement1
(C) for ( name in vector ) statement1
(D) forif loop( name in vector ) statement1

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✅ Correct Answer: (C) for ( name in vector ) statement1

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:12 am in R Programming

Q. What will be the output of the following R code?
> printmessage2 <- function(x) {
+ if(is.na(x))
+ print("x is a missing value!")
+ else if(x > 0)
+ print("x is greater than zero")
+ else
+ print("x is less than or equal to zero")
+ invisible(x)
+ }
> printmessage2(NA)

(A) "x is a missing value!"
(B) "x is greater than zero"
(C) "x is less than or equal to zero"
(D) Error

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✅ Correct Answer: (A) "x is a missing value!"

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:12 am in R Programming

Q. . . . . . . . . require you to pass a function whose argument is a vector of parameters.

(A) optimize()
(B) optimise()
(C) opt()
(D) opm()

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✅ Correct Answer: (C) opt()

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:12 am in R Programming

R Programming MCQs with answers Page - 48

Q. . . . . . . . . initiates an infinite loop right from the start.

Q. What will be the output of runif()?

Q. What will be the output of the following R code snippet?
> g <- function(x) {
+ a <- 3
+ x+a+y
+ ## 'y' is a free variable
+ }
> g(2)

Q. . . . . . . . . will produce a sequential vector c( (1,2,3,4,5,6,7,8,9)).

Q. What are the different types of sorting algorithms available in R language?

Q. Which function calculates the count of each category of a categorical variable?

Q. . . . . . . . . applies a function over the margins of an array.

Q. The syntax of the for loop is?

Q. What will be the output of the following R code?
> printmessage2 <- function(x) {
+ if(is.na(x))
+ print("x is a missing value!")
+ else if(x > 0)
+ print("x is greater than zero")
+ else
+ print("x is less than or equal to zero")
+ invisible(x)
+ }
> printmessage2(NA)

Q. . . . . . . . . require you to pass a function whose argument is a vector of parameters.

Programming Categories

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R Programming MCQs with answers Page - 48

Q. . . . . . . . . initiates an infinite loop right from the start.

Q. What will be the output of runif()?

Q. What will be the output of the following R code snippet? > g <- function(x) { + a <- 3 + x+a+y + ## 'y' is a free variable + } > g(2)

Q. . . . . . . . . will produce a sequential vector c( (1,2,3,4,5,6,7,8,9)).

Q. What are the different types of sorting algorithms available in R language?

Q. Which function calculates the count of each category of a categorical variable?

Q. . . . . . . . . applies a function over the margins of an array.

Q. The syntax of the for loop is?

Q. What will be the output of the following R code? > printmessage2 <- function(x) { + if(is.na(x)) + print("x is a missing value!") + else if(x > 0) + print("x is greater than zero") + else + print("x is less than or equal to zero") + invisible(x) + } > printmessage2(NA)

Q. . . . . . . . . require you to pass a function whose argument is a vector of parameters.

Programming Categories

📱 Download Our App

Q. What will be the output of the following R code snippet?
> g <- function(x) {
+ a <- 3
+ x+a+y
+ ## 'y' is a free variable
+ }
> g(2)

Q. What will be the output of the following R code?
> printmessage2 <- function(x) {
+ if(is.na(x))
+ print("x is a missing value!")
+ else if(x > 0)
+ print("x is greater than zero")
+ else
+ print("x is less than or equal to zero")
+ invisible(x)
+ }
> printmessage2(NA)