R Programming MCQs with answers Page - 19

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. Point out the correct statement?

  • (A) Using factors with labels is better than using integers because factors are self-describing
  • (B) Factors are used to represent categorical data and can be unordered or ordered
  • (C) Factors are important in statistical modeling and are treated specially by modelling functions like lm() and glm()
  • (D) All of the mentioned
💬 Discuss
✅ Correct Answer: (D) All of the mentioned

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

Q. Density function gives output as . . . . . . . .

  • (A) Matrix
  • (B) Lists
  • (C) Vector
  • (D) Number
💬 Discuss
✅ Correct Answer: (B) Lists

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

Q. Which of the following code snippet will create a vector with NAs in it?

  • (A) x >- c(1, 2, NA, 10, 3)
  • (B) x >- cNA(1, 2, NA, 10, 3)
  • (C) x >- NA(1, 2, NA, 10, 3)
  • (D) x >- NA(1, 5, NA, 10, 8)
💬 Discuss
✅ Correct Answer: (A) x >- c(1, 2, NA, 10, 3)

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

Q. What is the simplest way of creating the vector?

  • (A) C function
  • (B) Create
  • (C) Destroy
  • (D) Invalid
💬 Discuss
✅ Correct Answer: (A) C function

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

Q. . . . . . . . . provides optional labels with the columns and rows.

  • (A) Disnames
  • (B) Dimnames
  • (C) Denmes
  • (D) Demnesd
💬 Discuss
✅ Correct Answer: (B) Dimnames

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

Q. Point out the correct statement?

  • (A) Empty vectors can be created with the vector() function
  • (B) A sequence is represented as a vector but can contain objects of different classes
  • (C) "raw" objects are commonly used directly in data analysis
  • (D) The value NaN represents undefined value
💬 Discuss
✅ Correct Answer: (A) Empty vectors can be created with the vector() function

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

Q. What will be the output of the following R code?
> x <- c(1, 2, NaN, NA, 4)
> is.na(x)

  • (A) FALSE FALSE TRUE TRUE FALSE
  • (B) FALSE TRUE TRUE TRUE FALSE
  • (C) TRUE FALSE TRUE TRUE FALSE
  • (D) TRUE FALSE TRUE FALSE FALSE
💬 Discuss
✅ Correct Answer: (A) FALSE FALSE TRUE TRUE FALSE

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

Q. Accessing elements is achieved through a process called . . . . . . . .

  • (A) Indexing
  • (B) Outdexing
  • (C) Highlighting
  • (D) Scrapping
💬 Discuss
✅ Correct Answer: (A) Indexing

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

Q. A . . . . . . . . is an R-object which can contain many different types of elements inside it.

  • (A) Vector
  • (B) Lists
  • (C) Matrix
  • (D) Functions
💬 Discuss
✅ Correct Answer: (B) Lists

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

Q. Data frames can be converted to a matrix by calling data . . . . . . . .

  • (A) as.matr()
  • (B) as.mat()
  • (C) as.matrix()
  • (D) as.max()
💬 Discuss
✅ Correct Answer: (C) as.matrix()

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:10 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