R Programming MCQs with answers Page - 112

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Q. In R, which package is commonly used for working with regular expressions?

  • (A) regexR
  • (B) rexplore
  • (C) stringi
  • (D) retext

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Q. What is the role of the RCurl package in R?

  • (A) Handling URLs and performing HTTP requests
  • (B) Statistical hypothesis testing
  • (C) Natural language processing (NLP)
  • (D) Machine learning model training and evaluation

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Q. In R, which package is commonly used for Bayesian statistical modeling with probabilistic programming?

  • (A) brms
  • (B) bayesR
  • (C) pymc3
  • (D) bayesianstats

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Q. What is the primary purpose of the shinydashboard package in R Shiny applications?

  • (A) Building interactive dashboards for data visualization
  • (B) Creating statistical models
  • (C) Customizing the appearance of ggplot2 plots
  • (D) Web scraping and data extraction

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Q. In R, which package is commonly used for dimensionality reduction and feature extraction in machine learning?

  • (A) dimred
  • (B) mlr
  • (C) featureR
  • (D) reduction

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Q. What is the tainted property of the window object?

  • (A) Pathname
  • (B) Protocol
  • (C) Default status
  • (D) Host

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Q. Which environment variable must the user enable in order to enable data tainting?

  • (A) ENABLE_TAINT
  • (B) MS_ENABLE_TAINT
  • (C) NS_ENABLE_TAINT
  • (D) ENABLE_TAINT_NS

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Q. How many parameters does the method plot() accept?

  • (A) 6
  • (B) 7
  • (C) 8
  • (D) 9

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Q. What is the need for bubble charts?

  • (A) Represent 2D data
  • (B) Represent 3D data
  • (C) Represent 2D and 3D data
  • (D) None of the mentioned

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Q. Which of the following is the initial function used to create a bubble chart natively in R?

  • (A) init()
  • (B) chart(bubble)
  • (C) symbols()
  • (D) none of the mentioned

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