R Programming MCQs with answers Page - 64

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. What will be the output of the following R code?
> x <- rnorm(10)
> x

  • (A) [1] 0.01874617 -0.18425254 -1.37133055 -0.59916772 0.29454513 [6] 0.38979430 -1.20807618 -0.36367602 -1.62667268 -0.25647839
  • (B) [1] 22.20356 21.51156 19.52353 21.97489 21.48278 20.17869 18.09011 [8] 19.60970 21.85104 20.96596
  • (C) Min. 1st Qu. Median Mean 3rd Qu. Max. 18.09 19.75 21.22 20.74 21.77 22.20
  • (D) Error
💬 Discuss
✅ Correct Answer: (A) [1] 0.01874617 -0.18425254 -1.37133055 -0.59916772 0.29454513 [6] 0.38979430 -1.20807618 -0.36367602 -1.62667268 -0.25647839

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

Q. Logical flag is applicable to which of the following plots?

  • (A) scatterplot
  • (B) dotplot
  • (C) xyplot
  • (D) zyplot
💬 Discuss
✅ Correct Answer: (B) dotplot

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

Q. What does the 'pch' option to par() control?

  • (A) the size of the plotting symbol in a scatterplot
  • (B) the line width in the base graphics system
  • (C) the orientation of the axis labels on the plot
  • (D) the plotting symbol/character in the base graphics system
💬 Discuss
✅ Correct Answer: (D) the plotting symbol/character in the base graphics system

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

Q. Point out the correct statement?

  • (A) update_element update contents of a theme
  • (B) Use theme_update_element to modify a small number of elements of the current theme or use theme_set to completely override it
  • (C) theme_bw is theme with grey background and white gridlines
  • (D) is.rel reports whether x is a theme object
💬 Discuss
✅ Correct Answer: (A) update_element update contents of a theme

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

Q. . . . . . . . . display a smooth density estimate.

  • (A) geom_density2
  • (B) geom_density
  • (C) aes_sdensity
  • (D) geom_contour
💬 Discuss
✅ Correct Answer: (B) geom_density

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

Q. Which of the following is discrete state calculator?

  • (A) discrete_scale
  • (B) ggpcp
  • (C) ggfluctuation
  • (D) ggmissing
💬 Discuss
✅ Correct Answer: (C) ggfluctuation

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

Q. Which of the following d takes two columns and spreads them into multiple columns?

  • (A) ggmissplot
  • (B) printplot
  • (C) print.ggplot
  • (D) ggplot
💬 Discuss
✅ Correct Answer: (C) print.ggplot

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

Q. Point out the correct statement?

  • (A) gather() makes "wide" data longer
  • (B) Two functions are present for tidy data
  • (C) separate() makes "wide" data longer
  • (D) spread() function takes multiple columns
💬 Discuss
✅ Correct Answer: (C) separate() makes "wide" data longer

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

Q. Which of the following code is not profiled?

  • (A) C
  • (B) C++
  • (C) Java
  • (D) PHP
💬 Discuss
✅ Correct Answer: (A) C

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

Q. 5 Normal random numbers can be generated with rnorm() by setting seed value to . . . . . . . .

  • (A) 1
  • (B) 2
  • (C) 3
  • (D) 4
💬 Discuss
✅ Correct Answer: (A) 1

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