R Programming MCQs with answers Page - 2

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📊 R Programming
Q. Finally, in . . . . . . . . R version 1.0.0 was released to the public.
  • (A) 2000
  • (B) 2005
  • (C) 2010
  • (D) 2012
💬 Discuss
✅ Correct Answer: (A) 2000
📊 R Programming
Q. A . . . . . . . . is a variable that holds one value at a time.
  • (A) Scalar variable
  • (B) Duplex
  • (C) High
  • (D) Vector
💬 Discuss
✅ Correct Answer: (A) Scalar variable
📊 R Programming
Q. Which of the following is not an object of R?
  • (A) calls
  • (B) expressions
  • (C) strings
  • (D) names
💬 Discuss
✅ Correct Answer: (C) strings
📊 R Programming
Q. Scripts will run on . . . . . . . .
  • (A) Script Editors
  • (B) Console
  • (C) Terminal
  • (D) GCC Compiler
💬 Discuss
✅ Correct Answer: (A) Script Editors
📊 R Programming
Q. Why is it needed for R studio to update regularly?
  • (A) Bugs
  • (B) More Functions
  • (C) Methods
  • (D) For more packages
💬 Discuss
✅ Correct Answer: (A) Bugs
📊 R Programming
Q. If commands are stored in an external file, say commands.R in the working directory work, they may be executed at any time in an R session with the command . . . . . . . .
  • (A) source("commands.R")
  • (B) exec("commands.R")
  • (C) execute("commands.R")
  • (D) exect("command.R")
💬 Discuss
✅ Correct Answer: (A) source("commands.R")
📊 R Programming
Q. Point out the wrong statement?
  • (A) The grammar of the language determines whether an expression is complete or not
  • (B) The <- symbol is the assignment operator in R
  • (C) The ## character indicates a comment
  • (D) R does not support multi-line comments or comment blocks
💬 Discuss
✅ Correct Answer: (C) The ## character indicates a comment
📊 R Programming
Q. Which of the following will start the R program?
  • (A) $ R
  • (B) > R
  • (C) * R
  • (D) @ R
💬 Discuss
✅ Correct Answer: (A) $ R
📊 R Programming
Q. What will be the output of the following R function?
nchar()
  • (A) no. of characters
  • (B) first 5 characters
  • (C) last 5 characters
  • (D) Does not exist
💬 Discuss
✅ Correct Answer: (A) no. of characters
📊 R Programming
Q. What is the meaning of the following R function?
print( sqrt(2) )
  • (A) 1.414314
  • (B) 1.414214
  • (C) Error
  • (D) 14.1414
💬 Discuss
✅ Correct Answer: (B) 1.414214

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