Introduction to R Programming MCQ question and answer with solution

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Each section contains 100 MCQs on Introduction to R Programming .

Is It possible to inspect the source code of R?

A) Yes B) No C) Can't say D) Some times

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Which of the following packages does not contain in "base" R system?

A) utils, graphics B) mesh, compiler C) splines, stats4 D) grDevices, datasets

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

In the expression x <- 4 in R, what is the class of 'x' as determined by the `class()' function?

A) Character B) Numeric C) Integer D) Word

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Functionality of R is divided into a number of . . . . . . . .

A) Functions B) Domains C) Packages D) Files

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Point out the wrong statement?

A) Windows versions of R have other optional help system also B) The help.search command (alternatively ??) allows searching for help in various ways C) R is case insensitive as are most UNIX based packages, so A and a are different symbols and would refer to different variables D) $ R is used to start the R program

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

What will be the output of the following R code?

x <- (“a”, “b”)
as.logical(x)

A) a b B) "a" "b" C) 1 1 D) Error

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

What is the mode of b in the following R code?

b <- c(TRUE, TRUE, 1)

A) Numeric B) Character C) Integer D) Logical

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Point out the wrong statement?

A) Setting up a workstation to take full advantage of the customizable features of R is a straightforward thing B) q() is used to quit the R program C) R has an inbuilt help facility similar to the man facility of UNIX D) Windows versions of R have other optional help systems also

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Which of the following command is used to print an object "x" in R?

A) printf(x) B) print(x) C) printx D) print[x]

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

What will be the output of the following R code?

a <- (“a” , “b”)
mode(a)

A) Character B) Numeric C) Complex D) Integer

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

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Introduction to R Programming MCQ question and answer with solution | R Programming MCQs