R Programming MCQs with answers Page - 11

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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Q. Which of the following is a base package for R language?

  • (A) util
  • (B) lang
  • (C) tools
  • (D) spatial

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Q. What is the function to set column names for a matrix?

  • (A) names()
  • (B) colnames()
  • (C) col.names()
  • (D) column name cannot be set for a matrix

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Q. What will be the output of the following R code?
x<- c (“a”,” b”)
as.numeric(x)

  • (A) [1] 1 2
  • (B) [1] TRUE TRUE
  • (C) [1] NA NA (Warning message: NAs introduced by coercion)
  • (D) [1] NAN

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Q. Files containing R scripts ends with extension . . . . . . . .

  • (A) .S
  • (B) .R
  • (C) .Rp
  • (D) .SP

A

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Q. R has many functions regarding . . . . . . . .

  • (A) Statistics, Biotechnology
  • (B) Probability, Microbiology
  • (C) Distributions, Physics
  • (D) Statistics, Probability, Distributions

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Q. In R language, a vector is defined that it can only contain objects of the . . . . . . . .

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

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Q. Which of the following can be used to display the names of (most of) the objects which are currently stored within R?

  • (A) object()
  • (B) objects()
  • (C) list()
  • (D) class()

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Q. Which language is best for the statistical environment?

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

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Q. What will be the output of the following R function?
Sys.Date()

  • (A) Tomorrow date
  • (B) Present date
  • (C) Some date
  • (D) Yesterday date

A

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Q. Which of the following is "Recommended" package in R?

  • (A) util
  • (B) lang
  • (C) stats
  • (D) spatial

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