This quiz “MCQs R Programming Language” will help you to check your ability to execute some basic operations on objects in the R language, and it will also help you to understand some basic concepts. This MCQs R Programming Language Quiz may also improve your computational understanding.
Online MCQs about R Programming Language.
MCQs R Programming Language 1
- The R language is a dialect of which of the following programming languages?
- The definition of free software consists of four freedoms (freedoms 0 through 3). Which of the following is NOT one of the freedoms that are part of the definition?
- In R language the following are all atomic data types EXCEPT
- If I execute the expression x <- 4 in R language, what is the class of the object “x” as determined by the “class()” function?
- What is the class of the object defined by the expression x <- c(4, “a”, TRUE)?
- If I have two vectors x <- c(1,3, 5) and y <- c(3, 2, 10), what is produced by the expression rbind(x, y)?
- A key property of vectors in R language is that
- Suppose I have a list defined as x <- list(2, “a”, “b”, TRUE). What does x[[2]] give me?
- Suppose I have a vector x <- c(3, 5, 1, 10, 12, 6) and I want to set all elements of this vector that are less than 6 to be equal to zero. What R code achieves this?
- ____________ is a function in R to get the number of observations in a data frame
- What function is used to test the missing observation in a data frame
- Which of the following statements about RStudio’s integrated development environment are correct?
- Suppose I have a vector x <- 1:4 and y <- 2:3. What is produced by the expression x + y?
- Which of the following statements about RStudio’s integrated development environment are correct?
- A data analyst writes the code summary(penguins) to display a summary of the penguins dataset. Where in RStudio can the analyst execute the code?
- What should you use to assign a value to a variable in R?
- Which of the following examples is the proper syntax for a function in R?
- What is the benefit of using the R programming language for data analysis?
- Which of the following examples can you use in R for date/time data?
- A data analyst inputs the following calculation in their R programming: $$basket_1 * 20 + basket_2 * 15 $$ Which arithmetic operators are the analyst using?
