R Programming MCQs with answers Page - 28

Dear candidates you will find MCQ questions of R Programming here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.
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Q. What does the scan() function do in R?

  • (A) Read input from the console
  • (B) Read data from a file
  • (C) Perform a linear regression
  • (D) Generate random numbers
💬 Discuss
✅ Correct Answer: (B) Read data from a file

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

Q. What function is used to calculate the square root of a number in R?

  • (A) sqrt()
  • (B) squareRoot()
  • (C) sqrRoot()
  • (D) rootSquare()
💬 Discuss
✅ Correct Answer: (A) sqrt()

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

Q. In R, what does the function toupper("hello") return?

  • (A) "HELLO"
  • (B) "hello"
  • (C) "hElLo"
  • (D) "Hello"
💬 Discuss
✅ Correct Answer: (A) "HELLO"

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

Q. What is the result of sum(1:5) in R?

  • (A) 15
  • (B) 10
  • (C) 11
  • (D) 25
💬 Discuss
✅ Correct Answer: (A) 15

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

Q. How is the maximum value of a numeric vector calculated in R using the max() function?

  • (A) max(vector)
  • (B) maximum(vector)
  • (C) vectorMax(vector)
  • (D) max_value(vector)
💬 Discuss
✅ Correct Answer: (A) max(vector)

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

Q. In R, what does the function tolower("WORLD") return?

  • (A) "world"
  • (B) "WORLD"
  • (C) "wOrLd"
  • (D) "World"
💬 Discuss
✅ Correct Answer: (A) "world"

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

Q. What symbol is used for assignment in R?

  • (A) <-
  • (B) =
  • (C) ->
  • (D) assign()
💬 Discuss
✅ Correct Answer: (A) <-

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

Q. What does the function print() do in R?

  • (A) Display the result of a calculation
  • (B) Read input from the user
  • (C) Plot a graph
  • (D) Install a package
💬 Discuss
✅ Correct Answer: (A) Display the result of a calculation

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

Q. In R, how is a variable assigned a value?

  • (A) set
  • (B) =
  • (C) ->
  • (D) assign()
💬 Discuss
✅ Correct Answer: (A) set

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

Q. What is the purpose of the seq() function in R?

  • (A) Create a sequence of numbers
  • (B) Sort a vector
  • (C) Merge two data frames
  • (D) Compute the mean of a numeric vector
💬 Discuss
✅ Correct Answer: (A) Create a sequence of numbers

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

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