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Welcome to the History and Overview of R Programming Language MCQs Page

Dive deep into the fascinating world of History and Overview of R Programming Language with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of History and Overview of R Programming Language, a crucial aspect of R Programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of History and Overview of R Programming Language, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within R Programming.

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Check out the MCQs below to embark on an enriching journey through History and Overview of R Programming Language. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of R Programming.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of History and Overview of R Programming Language. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

History and Overview of R Programming Language MCQs | Page 5 of 5

Q41.
What is the class defined in the following R code?
y←c(FALSE,2)
Discuss
Answer: (b).Numeric
Q42.
Which one of the following is not a basic datatype?
Discuss
Answer: (c).Data frame
Q43.
How do you create an integer suppose 5 in R?
Discuss
Answer: (a).5L
Q44.
What will be the output of the following R code?
x<- c (“a”,” b”)
       as.numeric(x)
Discuss
Answer: (c).[1] NA NA (Warning message: NAs introduced by coercion)
Q45.
The dimension attribute is itself an integer vector of length _______

a.

1

b.

2

c.

3

d.

4

Discuss
Answer: (b).2
Q46.
How could be the matrix constructed by using the following R code?
m <- matrix(1:6, nrow = 2, ncol = 3)
Discuss
Answer: (b).column-wise
Q47.
Matrices can be created by row-binding with the help of the following function.
Discuss
Answer: (b).rbind()
Q48.
What is the function used to test objects (returns a logical operator) if they are NA?
Discuss
Answer: (a).is.na()
Q49.
What is the function used to test objects (returns a logical operator) if they are NaN?
Discuss
Answer: (d).is.nan()
Q50.
What is the function to set column names for a matrix?
Discuss
Answer: (b).colnames()
Page 5 of 5

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