R Language Quiz

The post is about Shiny app Quiz Questions. There are 20 multiple-choice questions about R Language and Shiny App. Let us start with MCQs Shiny App Quiz Questions with Answers now.

Online MCQs Shiny App Quiz Questions

• Which two components of a dashboard happen on the back end?
• Which is the preferred method for creating a Shiny app?
• You must include the shinyApp() function in the code for all Shiny apps.
• Which function creates an empty layout?
• If you have the command plotOutput(“plot_histogram”) in the UI-side code in your Shiny application, what is the name of the variable that you assign the plot to in the server-side code?
• Can you publish a Shiny app to your shinyapps.io account from RStudio?
• In a Shiny application, where do you add input widgets?
• Which deployment method should you select for your Shiny app if you do not want to run your server? Computer MCQs Test
• What are the two main differences between an R Markdown document and a Shiny dashboard? MCQs in Statistics
• A Shiny app consists of two parts, the server that the user interacts with and the UI that powers the app.
• Which two components of a dashboard happen on the front end?
• You use the Layout functions to organize —————- containing user interface elements in the application.
• When defining the server logic for a Shiny app, you define a function that includes which of the following parameters?
• Which of the following is a true statement about functions found in the Shiny library?
• which function is used to construct an initial empty UI when creating a Shiny app?
• Which of the following is NOT a parameter to the varSelectInput() function?
• Which function adds a title to a fluidPage layout?
• Which statement best describes the varSelectInput() function?

MCQs in Statistics

The post is about R and Database Management System Quiz with Answers. There are 20 multiple-choice questions about R language and database connectivity with R. Let us start with the R and Database Management System Quiz now.

Please go to R and Database Management System Quiz 20 to view the test

R and Database Management System Quiz

• How can a relational database help R handle memory issues?
• Which R function saves a single data structure to a .Rda file?
• Which of the following concepts illustrates a data frame in R language?
• When mapping data types between R and a database, which of the following should you consider converting to strings?
• When designing a relational database, which aspect is primarily addressed by normalization techniques?
• Which of the following is the simplest way to update individual observations in a data frame?
• A variable in R language is comparable to which of the following relational database concepts?
• In the context of mapping data between R and relational databases, how does logical data from R typically represent when exchanged with a database server?
• What benefit does using a relational database with R provides even when the data does not reside in the database?
• Choose a statement that best describes declarative referential integrity.
• Which function in the RJDBC package is used to close the database connection after accessing the data?
• What does RJDBC stand for?
• Which of the following statements about database packages for R are true?
• Which of the following statements correctly describes the ODBC Driver Manager?
• What are the two categories of relational database access packages in R language? https://rfaqs.com
• Which of the following is the first step that you must take before using the RJDBC package for R language? https:/rfaqs.com
• Which of the following is one of the two components of ODBC?
• What is the best way to provide a data analyst with knowledge of a database schema or structure, often depicted using an entity-relationship (ER) diagram?
• Which RODBC function is best suited for retrieving information about the structure and attributes of database tables?
• What is the first step you must complete outside of R before installing the RODBC package?

Sociology Quiz with Answers

Statistical Simulation

The Quiz is about R Programming Quiz with Answers. There are 20 multiple-choice questions covering different topics related to R Language Programming. Let us start with the R Programming Quiz now.

Please go to R Programming Quiz 19 to view the test

Online R Programming Quiz with Answers

• What is the main reason for using the R language?
• In R, what is the result of the function as.numeric(TRUE)?
• In R, variables are typically assigned using <-, but they can also be assigned using which of the following symbols?
• Which command in R would return the following character vector? “Imdad” “Usman” “Ali” “Amir”
• In R, assume you have a vector named “age,” and each element in the vector is the age of one person in a group. The vector has the following content: 24 32 46 19. What will be the result if you issue the age[-2] command?
• Assume the array books_array contains 6 elements. The array has three rows and two columns and appears as follows:

    [,1]              [,2]
[1,] “It”              “Dr. Sleep”
[2,] “Misery”          “Carrie”
[3,] “The Shining”   “The Mist”

Which of the following commands will return “The Shining”?

• In R language, which command returns the last six elements of a data object such as a data frame?
• Assume that the function add is defined as follows:
  add <- function(x,y) {
  (x + y)
  return (x – y)
  temp <<- (x * y)
  return (x / y)
  }
  What will be the output if you issue the command add(10,5)?
• What is the first step you must take before you can read an Excel spreadsheet in R?
• After installing and calling the httr library in R, which method should you use to update a resource?
• In R, what is the result of the function as.integer(3.3)?
• In R, which command removes a variable from memory?
• In R, assume a character vector called “names” has the following contents: “Harry” “Jimmy” “Tammy” Which command would return the following logical vector? FALSE TRUE FALSE
• In R, assume you have a vector named “age,” and each element in the vector is the age of one person in a group. Which command must you use to reorder the ages from youngest to oldest?
• In R, which command will output the data from the Nile built-in data set?
• In R, which command should you use to insert a new row into a data frame?
• To perform a one-way Analysis of variance, one can use a function
• How many elements will be in vector $b$, if b <- 10:15
• All columns in a matrix must have the
• For a matrix $X$ of order $n\times p$ and a vector $Y$ of order $n\times 1$, one can find regression coefficients using

Statistics and Data Analysis

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