R Programming MCQ Questions with answers and solutions Page 49

Q. Which of the following is valid syntax for if else statement in R?

(A) if(<condition>) { ## do something } else { ## do something else }
(B) if(<condition>) { ## do something } elseif { ## do something else }
(C) if(<condition>) { ## do something } else if { ## do something else }
(D) if(<condition>) { ##& do something } else { ##@ do something else }

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✅ Correct Answer: (A) if(<condition>) { ## do something } else { ## do something else }

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

Q. What will be the class of the vector if you concatenate a number and NA?

(A) Number
(B) Character
(C) Integer
(D) No class

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✅ Correct Answer: (A) 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?
> f <- function(a, b) {
+ a^2
+ }
> f(2)

(A) 4
(B) 3
(C) 2
(D) 5

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✅ Correct Answer: (A) 4

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

Q. . . . . . . . . function is preferred over sapply as vapply allows the programmer to specific the output type.

(A) Lapply
(B) Japply
(C) Vapply
(D) Zapply

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✅ Correct Answer: (C) Vapply

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

Q. The line of code in R language should begin with a . . . . . . . .

(A) Hash symbol
(B) Alphabet
(C) Number
(D) Character

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✅ Correct Answer: (A) Hash symbol

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?
> paste("a", "b", se = ":")

(A) "a+b"
(B) "a=b"
(C) "a b :"
(D) none of the mentioned

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✅ Correct Answer: (D) none of the mentioned

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

Q. CRAN package ecosystem has more than . . . . . . . . packages.

(A) 5000
(B) 4000
(C) 6000
(D) 8000

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✅ Correct Answer: (C) 6000

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

Q. . . . . . . . . function will measure the probability of the binary response variable in R language.

(A) Glm()
(B) Glmi()
(C) Gelmi()
(D) Jlm()

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✅ Correct Answer: (A) Glm()

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

Q. Point out the correct statement?

(A) Writing functions is a core activity of an R programmer
(B) Functions are often used to encapsulate a sequence of expressions that need to be executed numerous times
(C) Functions are also often written when code must be shared with others or the public
(D) All of the mentioned

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✅ Correct Answer: (D) All of the mentioned

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

Q. How missing values and impossible values are represented in R language?

(A) NA
(B) NAN
(C) NA & NAN
(D) Not Exist

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✅ Correct Answer: (C) NA & NAN

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

R Programming MCQs with answers Page - 49

Q. Which of the following is valid syntax for if else statement in R?

Q. What will be the class of the vector if you concatenate a number and NA?

Q. What will be the output of the following R code snippet?
> f <- function(a, b) {
+ a^2
+ }
> f(2)

Q. . . . . . . . . function is preferred over sapply as vapply allows the programmer to specific the output type.

Q. The line of code in R language should begin with a . . . . . . . .

Q. What will be the output of the following R code snippet?
> paste("a", "b", se = ":")

Q. CRAN package ecosystem has more than . . . . . . . . packages.

Q. . . . . . . . . function will measure the probability of the binary response variable in R language.

Q. Point out the correct statement?

Q. How missing values and impossible values are represented in R language?

Programming Categories

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R Programming MCQs with answers Page - 49

Q. Which of the following is valid syntax for if else statement in R?

Q. What will be the class of the vector if you concatenate a number and NA?

Q. What will be the output of the following R code snippet? > f <- function(a, b) { + a^2 + } > f(2)

Q. . . . . . . . . function is preferred over sapply as vapply allows the programmer to specific the output type.

Q. The line of code in R language should begin with a . . . . . . . .

Q. What will be the output of the following R code snippet? > paste("a", "b", se = ":")

Q. CRAN package ecosystem has more than . . . . . . . . packages.

Q. . . . . . . . . function will measure the probability of the binary response variable in R language.

Q. Point out the correct statement?

Q. How missing values and impossible values are represented in R language?

Programming Categories

📱 Download Our App

Q. What will be the output of the following R code snippet?
> f <- function(a, b) {
+ a^2
+ }
> f(2)

Q. What will be the output of the following R code snippet?
> paste("a", "b", se = ":")