R Programming MCQs with answers Page - 7

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Q. What will be the output of the following R function?
cat("Everybody", "is", "a", “warrior”,sep="*")

  • (A) "Everybody", "is", "a" , "warrior"
  • (B) Everybody*is*a*warrior
  • (C) Everybody", "is", "a" , "warrior
  • (D) "Everybody*is*a*warrior"

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Q. A list is represented as a vector but can contain objects of . . . . . . . .

  • (A) Same class
  • (B) Different class
  • (C) Similar class
  • (D) Any class

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Q. Full Form of GUI is . . . . . . . .

  • (A) Guided User Interface
  • (B) Graphical User Interface
  • (C) Guided Used Interface
  • (D) Graphical User Interval

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Q. In 1991, R was created by Ross Ihaka and Robert Gentleman in the Department of Statistics at the University of . . . . . . . .

  • (A) John Hopkins
  • (B) California
  • (C) Harvard
  • (D) Auckland

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Q. What will be the output of the following R function?
d <- date()
d

  • (A) Prints todays date
  • (B) Prints some date
  • (C) Prints exact present time and date
  • (D) Error

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Q. What will be the output of the following R code?
options(digits = 16)
20/6

  • (A) 3.33
  • (B) 3.333
  • (C) 3.3333333
  • (D) 3.3333333333333333

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Q. Point out the wrong statement?

  • (A) R is a language for data analysis and graphics
  • (B) K is language for statistical modelling and graphics
  • (C) One key limitation of the S language was that it was only available in a commercial package, S-PLUS
  • (D) C is a language for data and graphics

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Q. Elementary commands in R consist of either . . . . . . . . or assignments.

  • (A) utilstats
  • (B) language
  • (C) expressions
  • (D) packages

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Q. What will be the output of the following R code?
> x <- 1
> print(x)

  • (A) 1
  • (B) 2
  • (C) 3
  • (D) 5

A

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Q. Collection of objects currently stored in R is called as . . . . . . . .

  • (A) package
  • (B) workspace
  • (C) list
  • (D) task

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