R Programming MCQs with answers Page - 125

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📊 R Programming
Q. . . . . . . . . let's you perform SQL queries on your R data frames.
  • (A) sqldf
  • (B) plyr
  • (C) forecast
  • (D) daply
💬 Discuss
✅ Correct Answer: (B) plyr
📊 R Programming
Q. . . . . . . . . splits a data frame and results an array (hence the da). Hopefully you're getting the idea here.
  • (A) apply
  • (B) daply
  • (C) stats
  • (D) plyr
💬 Discuss
✅ Correct Answer: (B) daply
📊 R Programming
Q. Which of the following statement can read csv files?
  • (A) read.table(filename,header=TRUE,sep=',')
  • (B) read.csv(filename,header=TRUE,sep=',')
  • (C) read.tab(filename,header=TRUE,sep=',')
  • (D) read.tab(filename,header=False,sep=',')
💬 Discuss
✅ Correct Answer: (A) read.table(filename,header=TRUE,sep=',')
📊 R Programming
Q. Which distribution comes up a lot in Bayesian statistics because it is a good model for one's prior beliefs about a population proportion?
  • (A) Bohr
  • (B) Discrete
  • (C) Alpha
  • (D) Beta
💬 Discuss
✅ Correct Answer: (D) Beta

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