R Programming MCQs with answers Page - 65

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 is an example of a valid graphics device in R?

  • (A) A socket connection
  • (B) A Microsoft Word document
  • (C) A PDF file
  • (D) A file folder
💬 Discuss
✅ Correct Answer: (C) A PDF file

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:13 am in R Programming

Q. What will be the output of the following R code?
> rpois(10, 1)

  • (A) [1] 7 0 1 1 2 1 1 4 1 2
  • (B) [1] 0 8 1 1 2 1 1 4 1 2
  • (C) [1] 0 0 1 1 2 1 1 4 1 2
  • (D) [1] 0 0 0 0 0 0 0 1 4 1 2
💬 Discuss
✅ Correct Answer: (C) [1] 0 0 1 1 2 1 1 4 1 2

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:13 am in R Programming

Q. The . . . . . . . . function computes the time (in seconds) needed to execute an expression.

  • (A) system.timedeb()
  • (B) system.time()
  • (C) system.datetime()
  • (D) system.deb()
💬 Discuss
✅ Correct Answer: (B) system.time()

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:13 am in R Programming

Q. Point out the correct statement?

  • (A) R comes with a set of pseudo-random number generators
  • (B) Random number generators cannot be used to model random inputs
  • (C) Statistical procedure does not require random number generation
  • (D) For each probability distribution there are typically three functions
💬 Discuss
✅ Correct Answer: (A) R comes with a set of pseudo-random number generators

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:13 am in R Programming

Q. Bitmapped file formats can be most useful for . . . . . . . .

  • (A) Plots that may need to be resized
  • (B) Plots that require animation or interactivity
  • (C) Plots that are not scaled to a specific resolution
  • (D) Scatterplots with many many points
💬 Discuss
✅ Correct Answer: (D) Scatterplots with many many points

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:13 am in R Programming

Q. . . . . . . . . time is time charged to the CPU(s) for the R expression.

  • (A) elapsed
  • (B) user
  • (C) response
  • (D) monitor
💬 Discuss
✅ Correct Answer: (A) elapsed

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:13 am in R Programming

Q. Spread function is known as . . . . . . . . in spreadsheets.

  • (A) pivot
  • (B) unpivot
  • (C) cast
  • (D) order
💬 Discuss
✅ Correct Answer: (B) unpivot

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:13 am in R Programming

Q. Point out the correct statement?

  • (A) tidyr and dplyr packages do not make use of the pipe operator
  • (B) tidyr does less than reshape2
  • (C) tidyr provides ability to string multiple functions together by incorporating %
  • (D) tidyr does greater than reshape2
💬 Discuss
✅ Correct Answer: (B) tidyr does less than reshape2

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:13 am in R Programming

Q. Which of the following creates a new ggplot plot from a data frame?

  • (A) qplot_ggplot
  • (B) ggplot.data.frame
  • (C) ggfluctuation
  • (D) ggmissplot
💬 Discuss
✅ Correct Answer: (B) ggplot.data.frame

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:13 am in R Programming

Q. What is a geom in the ggplot2 system?

  • (A) a plotting object like point, line, or other shape
  • (B) a method for making conditioning plots
  • (C) a method for mapping data to attributes like color and size
  • (D) a statistical transformation
💬 Discuss
✅ Correct Answer: (A) a plotting object like point, line, or other shape

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:13 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