R Programming MCQs with answers Page - 62

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Q. The elapsed time may be . . . . . . . . than the user time if your machine has multiple cores/processors.

  • (A) smaller
  • (B) greater
  • (C) equal to
  • (D) null
💬 Discuss
✅ Correct Answer: (A) smaller

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

Q. . . . . . . . . ensures reproducibility of the sequence of random numbers.

  • (A) sets.seed()
  • (B) set.seed()
  • (C) set.seedvalue()
  • (D) set.value()
💬 Discuss
✅ Correct Answer: (B) set.seed()

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

Q. . . . . . . . . is used to create a plot to illustrate patterns of missing values.

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

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

Q. Which of the following function works similar to separate()?

  • (A) extract()
  • (B) gather()
  • (C) sep()
  • (D) separate()
💬 Discuss
✅ Correct Answer: (A) extract()

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

Q. Which of the following function takes multiple columns?

  • (A) spread()
  • (B) gather()
  • (C) separate()
  • (D) extract()
💬 Discuss
✅ Correct Answer: (B) gather()

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

Q. The final bit of output that summaryRprof() provides is the . . . . . . . . interval and the total runtime.

  • (A) response
  • (B) sampling
  • (C) processing
  • (D) retrieve
💬 Discuss
✅ Correct Answer: (B) sampling

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

Q. . . . . . . . . is interval represented by a vertical line, with a point in the middle.

  • (A) geom_range
  • (B) geom_pointrange
  • (C) printplot
  • (D) geom_contour
💬 Discuss
✅ Correct Answer: (B) geom_pointrange

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

Q. Which of the following statement gives sampling interval?

  • (A) $sampling.interval
  • (B) $sampling.time
  • (C) $sampling.date
  • (D) $sampling.datetime
💬 Discuss
✅ Correct Answer: (B) $sampling.time

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

Q. Point out the wrong statement?

  • (A) mean_se is used to calculate mean and standard errors on either side
  • (B) hmisc wraps up a selection of summary functions from Hmisc to make it easy to use
  • (C) plot is used to create a scatterplot matrix (experimental)
  • (D) translate_qplot_base is used for translating between qplot and base graphics
💬 Discuss
✅ Correct Answer: (C) plot is used to create a scatterplot matrix (experimental)

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

Q. Point out the wrong statement?

  • (A) theme_minimal is minimalistic theme with no background annotations
  • (B) theme_color is classic-looking theme, with x and y axis lines and no gridlines
  • (C) theme_classic is a classic-looking theme
  • (D) translate_qplot_base is used for translating between qplot and base graphics
💬 Discuss
✅ Correct Answer: (B) theme_color is classic-looking theme, with x and y axis lines and no gridlines

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

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