R Programming MCQs with answers Page - 44

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.
Share your questions by clicking Add Question

Q. Which of the following R syntax is correct for while loop?

  • (A) while ( statement1 ) statement2
  • (B) while ( statement1 ) else statement2
  • (C) while ( statement1 ) do statement2
  • (D) while ( statement2 ) doelse statement2
💬 Discuss
✅ Correct Answer: (A) while ( statement1 ) statement2

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:12 am in R Programming

Q. Point out the wrong statement?

  • (A) Functions in R are "second class objects"
  • (B) The writing of a function allows a developer to create an interface to the code, that is explicitly specified with a set of parameters
  • (C) Functions provides an abstraction of the code to potential users
  • (D) Writing functions is a core activity of an R programmer
💬 Discuss
✅ Correct Answer: (A) Functions in R are "second class objects"

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:12 am in R Programming

Q. Which package can be integrated with dplyr for large fast tables?

  • (A) Table
  • (B) Data, dplyr
  • (C) Data.table
  • (D) Dplyr.table
💬 Discuss
✅ Correct Answer: (C) Data.table

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:12 am in R Programming

Q. Which package in R supports the exploratory analysis of genomic data?

  • (A) Adegenat
  • (B) Adegenet
  • (C) Adegnet
  • (D) Adezenet
💬 Discuss
✅ Correct Answer: (B) Adegenet

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:12 am in R Programming

Q. Point out the correct statement?

  • (A) POSIX represents a portable operating system interface, primarily for UNIX systems
  • (B) There are different levels of indication that can be used, ranging from mere notification to fatal error
  • (C) The default input format for POSIX dates consists of the month, followed by the year and day, separated by slashes or dashes
  • (D) R don't have any way to indicate to you that something's not right
💬 Discuss
✅ Correct Answer: (A) POSIX represents a portable operating system interface, primarily for UNIX systems

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:12 am in R Programming

Q. Point out the wrong statement?

  • (A) Dynamic scoping turns out to be particularly useful for simplifying statistical computations
  • (B) Lexical scoping turns out to be particularly useful for simplifying statistical computations
  • (C) The scoping rules of a language determine how values are assigned to free variables
  • (D) An environment is a collection of (symbol, value) pairs, i.e. x is a symbol and 3.14 might be its value
💬 Discuss
✅ Correct Answer: (A) Dynamic scoping turns out to be particularly useful for simplifying statistical computations

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:12 am in R Programming

Q. Which of the following R code can be used to avoid numeric problems such as taking the logarithm of a negative number?

  • (A) if( any(x < 0) ) y <- log(1+x) else y <- log(x)
  • (B) if( any(x <= 0) ) y <- log(1+x) else y <- log(x)
  • (C) if( any(x >= 0) ) y <- log(1+x) else y <- log(x)
  • (D) if( any(x >> 0) ) x >- log(1+x) else x <- log(x)
💬 Discuss
✅ Correct Answer: (B) if( any(x <= 0) ) y <- log(1+x) else y <- log(x)

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:12 am in R Programming

Q. debug() flags a function for . . . . . . . . mode in R mode.

  • (A) debug
  • (B) run
  • (C) compile
  • (D) recover
💬 Discuss
✅ Correct Answer: (B) run

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:12 am in R Programming

Q. You can check to see whether an R object is NULL with the . . . . . . . . function.

  • (A) is.null()
  • (B) is.nullobj()
  • (C) null()
  • (D) as.nullobj()
💬 Discuss
✅ Correct Answer: (A) is.null()

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:12 am in R Programming

Q. What will be the output of the following R expression?
> log(-2.3)

  • (A) Warning in log(-2.3): NaNs produced
  • (B) 1
  • (C) Null
  • (D) 0
💬 Discuss
✅ Correct Answer: (A) Warning in log(-2.3): NaNs produced

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:12 am in R Programming

Programming Categories

📱 Download Our App

Learn MCQs on the go with our easy-to-use Android app

Get it on Google Play