R Programming MCQs with answers Page - 3

Here, you will find a collection of MCQ questions on R Programming. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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A

Admin • 802.91K Points
Coach

Q. R is mostly used in . . . . . . . .

  • (A) Problem solving
  • (B) Statistics
  • (C) Probability
  • (D) All of the mentioned

A

Admin • 802.91K Points
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Q. What will be the output of the following R function?
ab <- list(1, 2, 3, "X", "Y", "Z")
dim(ab) <- c(3,2)
print(ab)

  • (A) 1 "X" 2 "Y" 3 " Z"
  • (B) 1 "X" 2 "Y" 3 " Y"
  • (C) 1 "W" 2 "Y" 3 " Z"
  • (D) Error

A

Admin • 802.91K Points
Coach

Q. Point out the wrong statement?

  • (A) Key feature of R was that its syntax is very similar to S
  • (B) R runs only on Windows computing platform and operating system
  • (C) R has been reported to be running on modern tablets, phones, PDAs, and game consoles
  • (D) R functionality is divided into a number of Packages

A

Admin • 802.91K Points
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Q. They primary R system is available from the . . . . . . . .

  • (A) CRAN
  • (B) CRWO
  • (C) GNU
  • (D) CRDO

A

Admin • 802.91K Points
Coach

Q. What is the function used to test objects (returns a logical operator) if they are NaN?

  • (A) as.nan()
  • (B) is.na()
  • (C) as.na()
  • (D) is.nan()

A

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Q. Dataframes can be converted into a matrix by calling the following function data . . . . . . . .

  • (A) matr()
  • (B) matrix()
  • (C) matrixf()
  • (D) matrixfunc()

A

Admin • 802.91K Points
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Q. Advanced programmers can write . . . . . . . . code to manipulate R objects.

  • (A) Python
  • (B) Java
  • (C) C
  • (D) Java Script

A

Admin • 802.91K Points
Coach

Q. What will be the output of the following R code?
y <- c(TRUE, 2)

  • (A) [1] "TRUE" "2"
  • (B) [1] "TRUE" 2
  • (C) [1] "0" "2"
  • (D) [1] 1 2

A

Admin • 802.91K Points
Coach

Q. Point out the WRONG statement?

  • (A) Early versions of the S language contain functions for statistical modeling
  • (B) The book Programming with Data by John Chambers documents S version of the language
  • (C) In 1993 Bell Labs gave StatSci (later Insightful Corp.) an exclusive license to develop and sell the S language
  • (D) The book Programming with Data by IBM documents S version of the language

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