MCQs R Basics Quiz 26

The post is about the “MCQs R Basics Quiz” which will help you check your ability to execute some basic or R Language, RStudio, Jupyter Notebook, and Google Colab. This quiz will help the learner to understand some basic concepts related to R Programming Language. This quiz may also improve your computational understanding, and it will also help you to learn and practice the MCQs R Basics Quiz now.

Online MCQs R Basics Quiz with Answers

• Which of the following most accurately describes R?
• Which of the following correctly describes the relationship between RStudio and R?
• Which of these is the easiest way to save R code that you write for future use?
• After you finish the trial period, R will cost hundreds of dollars to use, depending on the license you purchase.
• You need to carefully learn and understand all the details about how R works before you start coding.
• Are cheat sheets trustworthy guides for how to use R and RStudio?
• What does this line of code do in R? a <- 2+2
• Will R return a value of true or false if you evaluate this expression? “apple”==”appla”
• What will happen if you try to run this line of code in R? 10variable1 <- c(5, 19, 10, “apple”)
• In R, create the following object: test_vector <- c(“dog”, “fish”, “pig”, “parrot”). After you create the object, what do you get if you then run test_vector[4]?
• What value will this return?
  subtract_and_divide <- function(x, y){
  x – y
  x / y
  }
  subtract_and_divide(4, 8)
• What happens if you run this code? data.frame(alpha,beta)
• What part of the data frame “states” does this code call? states[15,2]
• Say you have a data frame named “inventory” with 3 rows and two columns, created like this:
  home <- c(“computer”, “calculator”, “scanner”)
  office <- c(“paper”, “pens”, “pencils”)
  inventory <- data.frame(home, office)
  What would happen if you ran this code? inventory$annex <- c(“printer”, “stapler”)
• How many working directories can you have set simultaneously in an R session?
• Is it easier to import rectangular or non-rectangular data into R?
• You want to access the “Date” column of a data frame called sales_data so you can operate on it. What is the correct way to refer to this column?
• What does the class() function do in R?
• Why is it helpful to be able to use functions like rnorm, rpois, rbinom, and runif?
• What is the easiest way to export a figure you create in RStudio?

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