Muhammad Imdad Ullah

Student and Instructor of Statistics and business mathematics. Completed my Ph.D. in Statistics from the Department of Statistics, Bahauddin Zakariya University, Multan, Pakistan. l like Applied Statistics, Mathematics and Statistical Computing. Statistical and Mathematical software used is SAS, STATA, GRETL, EVIEWS, R, SPSS, VBA in MS-Excel. Like to use type-setting LaTeX for composing Articles, thesis, etc.

MCQs Maps and Data Visualization in R 27

by

Put your R programming skills to the test with our MCQs Maps and Data Visualization in R Language quiz! This set of 20 multiple-choice questions covers essential topics like creating maps, plotting data, and mastering visualization techniques in R. Ideal for data scientists, analysts, and R enthusiasts, this quiz will help you sharpen your skills and deepen your understanding of data visualization. Take the quiz “MCQs Maps and Data Visualization in R Language now and level up your R programming expertise!

MCQs Maps and Data Visualization in R Language

Online MCQs Maps and Data Visualization in R Language with Answers

1. What is a leaflet?

 
 
 
 

2. Which statement best describes facets?

 
 
 
 

3. By default, what is the first argument in the plot() function?

 
 
 
 
 

4. Lattice plots are constructed with a single function call to a core lattice function (e.g. xyplot)

 
 

5. The lattice system is ideal for creating conditioning plots where you examine the same kind of plot under many different conditions.

 
 

6. Using the ggplot() method, which geometry function do you need to use to create a scatter plot?

 
 
 
 

7. Which package can you use for extra themes and color scales for ggplot2?

 
 
 
 

8. If I want to add popup icons to my leaflet map in R, I should use?

 
 
 
 

9. Which function should you use if you want to add markers to display a specific location on a map that you draw?

 
 
 
 

10. The geom argument takes a string for a value.

 
 

11. The lattice system, like the base plotting system, returns a trellis plot object

 
 

12. Using themes, you can change the colors and styles of the borders, backgrounds, lines, and text on a plot. What should you do if you want to completely remove one of these elements from the theme?

 
 
 
 

13. What is a histogram?

 
 
 
 

14. Load the `airquality’ dataset from the datasets package in R
library(datasets)
data(airquality)

I am interested in examining how the relationship between ozone and wind speed varies across each month. What would be the appropriate code to visualize that using ggplot2?

 
 
 
 

15. The R command df %>% leaflet() %>% addTiles() is equivalent to what?

 
 
 
 
 

16. How do you add titles and labels to figures you create with plot()?

 
 
 

17. Which package should be used to create a scatter plot?

 
 
 
 

18. Which two methods can be used to create scatter plots?

 
 
 
 

19. In a Leaflet map, which two statements describe the difference between the addCircles() and addCircleMarkers() functions?

 
 
 
 

20. Which of these statements about qplot() is NOT correct?

 
 
 

Online MCQs Maps and Data Visualization in R Language

  • Using themes, you can change the colors and styles of the borders, backgrounds, lines, and text on a plot. What should you do if you want to completely remove one of these elements from the theme?
  • In a Leaflet map, which two statements describe the difference between the addCircles() and addCircleMarkers() functions?
  • Which package should be used to create a scatter plot?
  • Using the ggplot() method, which geometry function do you need to use to create a scatter plot?
  • Which statement best describes facets?
  • Which package can you use for extra themes and color scales for ggplot2?
  • Which function should you use if you want to add markers to display a specific location on a map that you draw?
  • Which two methods can be used to create scatter plots?
  • What is a leaflet?
  • The R command df %>% leaflet() %>% addTiles() is equivalent to what?
  • If I want to add popup icons to my leaflet map in R, I should use?
  • What is a histogram?
  • How do you add titles and labels to figures you create with plot()?
  • By default, what is the first argument in the plot() function?
  • Which of these statements about qplot() is NOT correct?
  • Load the `airquality’ dataset from the datasets package in R
    library(datasets)
    data(airquality)
    I am interested in examining how the relationship between ozone and wind speed varies across each month. What would be the appropriate code to visualize that using ggplot2?
  • The geom argument takes a string for a value.
  • Lattice plots are constructed with a single function call to a core lattice function (e.g. xyplot)
  • The lattice system is ideal for creating conditioning plots where you examine the same kind of plot under many different conditions.
  • The lattice system, like the base plotting system, returns a trellis plot object

MS Excel Quiz Questions

MCQs R Basics Quiz 26

by

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
Please go to MCQs R Basics Quiz 26 to view the test

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?

MCQs Deep Learning Quiz

Python Data Structure Quiz 8

by

The post is about an Online Python Data Structure Quiz with Answers. There are 20 multiple-choice questions covering list, set, dictionary, tuple, and operations on these data structures. Let us start with the Python Data Structure Quiz now.

Online Python Data Structure Quiz with Answers
Please go to Python Data Structure Quiz 8 to view the test

Online Python Data Structure Quiz with Answers

  • Which of the following is a standard tool or language that can be used to clean and split data into load files?
  • After operating A.append([2,3,4,5]), what will be the length of the list A = [1]?
  • What are the keys of the following dictionary? {“a”:1,”b”:2}
  • Consider the following Python Dictionary: Dict={“A”:1,”B”:”2″,”C”:[3,3,3],”D”:(4,4,4),’E’:5,’F’:6} What will be the outcome of the following operation? Dict[“D”]
  • Which of the following is the correct syntax to extract the keys of a dictionary as a list?
  • Consider the following set: {“A”, “A”}, what will the result be when you create the set?
  • What method do you use to add an element to a set?
  • What is the result of the following operation? {‘a’,’b’} &{‘a’}
  • Examine the tuple A=((11,12),[21,22]), which involves a tuple and list. What is the outcome of the following operation A[1]?
  • Consider the tuple A=((11,12),[21,22]), which contains a tuple and list. What is the result of the following operation A[0][1]?
  • Consider the tuple A=((1),[2,3],[4]), that contains a tuple and list. What is the result of the following operation A[2]?
  • Examine the tuple A=((1),[2,3],[4]), that involves a tuple and list. What is the outcome of the following operation A[2][0]?
  • The method append does the following:
  • If L = [‘c’, ‘d’], then the output of the statement L.append([‘a’, ‘b’]) is:
  • Consider the following list: A=[“hard rock”,10,1.2] What will list A contain after the following command is run? del(A[1])
  • If A is a list, what does the following syntax do? B=A[:]
  • What is the result of the following? len((“disco”,10))
  • The variable release_year_dict is a Python dictionary. What is the outcome of applying the following method? release_year_dict.values()
  • Consider the set: V={‘A’,’B’}, what is the result of V.add(‘C’)?
  • What does the following function return? len([sum([1,1,1])])

Statistics and Data Analysis