Hello Learners, Today, we are going to share Free Data Visualization With R Cognitive Class Course Exam Answer launched by IBM. This certification course is totally free of cost✅✅✅ for you and available on Cognitive Class platform.
Here, you will find Data Visualization With R Exam Answers in Bold Color which are given below.
These answers are updated recently and are 100% correct✅ answers of all modules and final exam answers of Data Visualization With R from Cognitive Class Certification Course.
Course Name | Data Visualization With R of Cognitive Class |
Organization | IBM |
Skill | Online Education |
Level | Beginner |
Language | English |
Price | Free |
Certificate | Yes |
For giving/participate in quiz/exam, first you will need to enroll yourself in the given link mention below and learn Machine Learning With R launched by IBM. Interested students must enroll for this courses and grab this golden opportunity which will definitely enhance their technical skills and you will learn more things in brief.
Link for Course Enrollment: Enroll Now
Use “Ctrl+F” To Find Any Questions Answer. & For Mobile User, You Just Need To Click On Three dots In Your Browser & You Will Get A “Find” Option There. Use These Option to Get Any Random Questions Answer.
Module 1 – Basic Visualization Tools
Question 1:Choose the correct code from the following options to install the ggplot2 library in R.
- install.packages(ggplot2)
- install.package(“ggplot2”)
- install.packages(“ggplot2”)
- install.package(ggplot2)
Question 2:Select the correct code that provides numerical values to different segments of the pie chart?
- coord_polar(theta=’y’)
- coord_polar(‘y’)
- theta = coord_polar(‘y’)
- coord_polar()
Question 3: Select the correct code from the following options to remove the color of the bars in the histogram?
- xlab = 0
- alpha = I(0)
- binwidth = 0
- geom = 0
Module 2 – Basic Visualization Tools Continued
Question 1:Select the correct methods used to create a scatterplot in R?
- scatterplot3d()
- scatterplot()
- qplot()
- plot()
- All the above options are correct
Question 2:Select the correct parameter used to change the line width in a line graph using the geom_line() method ?
- line_size
- size
- line_width
- width
Question 3: Which parameter out of the following represents the Confidence Interval in Regression?
- confidence_interval
- se
- ci
- lm
Module 3 – Specialized Visualization Tools
Question 1:Select the correct option for the values of Median, Lower whisker, Upper whisker, First quartile, Third quartile for the dataset : 3, 5, 7, 8, 12, 13, 14, 18, 21?
- 33, 2, 5, 12, 18
- 6, 2, 22, 7, 2
- 12, 4, 2, 3, 17
- 12, 3, 21, 6, 16
Question 2: True or False : To create waffle charts in R, we use ggplot library which is used for graphs and also waffle library.
- True
- False
Question 3: When working with Radar Charts in R, what is the correct code used to suppress the warnings generated?
- (warn = -1)
- (warn = 1)
- options(warn = -1)
- None of the options are correct
Module 4 – How to create Maps
Question 1:Which function gives an object that represents an empty world map
- addMarkers
- addTiles
- leaflet
- None of the options are correct
Question 2:What is the use of the method addTiles() in R?
- To divide map in tiles.
- To zoom in the map to see different countries and streets in detail.
- To create tiles view of map.
- All the options above are correct
Question 3: ___________ method is used to publish a tile layer on the map.
- leaf()
- leaflet()
- addTiles()
- None of the above options are correct
Module 5 – How to build interactive web pages
Question 1:Which function is used to create the display of shiny app ?
- display()
- output functions
- fluidPage()
- input functions
Question 2:Which argument is used to position sliderbar on the right hand side in shiny app?
- align=”right”
- position=”right”
- position = “rightalign”
- sliderLayout(position=”right”)
Question 3: What does the ui.R file in R contain ?
- inputs for server.R
- layout and appearance of app.
- instructions to build output object.
- All the above options are correct
Final Exam Answers: Data Visualization with R
Question 1:Which of the following options indicate the features that make R suitable for Data Visualizations
- R is a free and open source tool
- Built for statistical computing
- Visualization Tools
- All the options above are correct
Question 2:if(“ggplot2” %in% rownames(installed.packages()) == FALSE) {install.packages(“ggplot2”)}library(ggplot2) Please select the correct explanation for the code from the following options
- Check if “ggplot2” library is already installed into R, if not then install it and load it into R environment
- Load the “ggplot2”library into R environment
- Install and load the “ggplot2” library into R environment
- Install the “ggplot2” library into R
Question 3: We want to create a Bar Graph with black filled bars, x and y axis labels as Cylinders and Number of cars respectively and outline color of bars as Red. Choose the correct code block from below which will create the desired graph.
- qplot(mtcars$cyl, geom = “bar”, fill = I(“black”), xlab = “Cylinders”, ylab = “Number of Cars”, colour = I(“red”))
- qplot(mtcars$cyl, geom = “histogram”, fill = I(“black”), xlab = “Cylinders”, ylab = “Number of Cars”, colour=I(“red”))
- qplot(mtcars$cyl, fill = I(“black”), xlab = “Cylinders”, ylab=”Number of Cars”, outline=I(“red”)
- None of the options are correct
Question 4: Choose the correct parameter which will define the width of the bars in a Histogram.
- binwidth
- barWidth
- bar_width(value)
- width
- None of the options are correct
Question 5: A pie chart in ggplot2 is a transformed stacked bar plot. Select the correct function from the following options to convert a stacked bar plot into a pie chart?
- pieChart (theta=’y’)
- coord_polar(theta=’y’)
- transform(theta=’y’)
- None of the above options are correct
Question 6: Let’s assume we have the mtcars dataset and we want to create a Scatter Plot by using mpg and wt columns of this dataset. Select the correctcode from the options below which can create the plot for us with red colored points.
- ggplot(mtcars,aes(x=mpg,y=wt)) + geom_point()
- ggplot(mtcars,aes(x=mpg,y=wt)) + geom_point(shape=19, colour=”red”)
- ggplot(mtcars,aes(x=mpg,y=wt)) + geom_point(shape=19, “blue”)
- None of the options above are correct
Question 7: True or False: It is possible plot more than one line at a time in the same graph using the ggplot() method
- False
- True
Question 8: Choose the correct statement from the following options
- se parameter is used to display confidence interval
- There is no term Confidence Interval in Regression
- If you want to display confidence interval then either just ignore the se attribute, or set it to TRUE
- None of above options are correct
Question 9: Suppose we want to download a .csv file from the link below, https://ibm.box.com/shared/static/cmid70rpa7xe4ocitcga1bve7r0kqnia.csv and store it with name my_data.csv in “/resources/data/” folder. Select the correct code from the options below
- file(“https://ibm.box.com/shared/static/cmid70rpa7xe4ocitcga1bve7r0kqnia.csv”, “/resources/data/my_data.csv”)
- download.file(“https://ibm.box.com/shared/static/cmid70rpa7xe4ocitcga1bve7r0kqnia.csv”, destfile = “/resources/data/my_data.csv”)
- download(“https://ibm.box.com/shared/static/cmid70rpa7xe4ocitcga1bve7r0kqnia.csv”, destfile = “/resources/data/my_data.csv”)
- None of the options are correct
Question 10: Select the correct format from the following options to create a word cloud with a minimum frequency value 1 and maximum words 200?
- wordcloud(words = data, freq = frequency, min.freq = 1, max.words=200)
- wordcloud(data, frequency, minimun= 1, max.words=200)
- wordcloud(freq = frequency, min.freq = 1, maxWords=200)
- wordcloud(words = data, freq = frequency, min.freq = 1)
Question 11: Select the correct option to create a WordCloud that is centered?
- order = FALSE
- random.order = TRUE
- random.order = FALSE
- random = TRUE
Question 12: dplyr and Scales libraries in a Radar Chart are used for?
- filtering the dataset
- provides convenient viewing and utility functions
- pipe operations and to determine labels respectively
- None of the options are correct
Question 13: Which method is used to avoid displaying warnings, generated while Creating a Radar Chart?
- options(warns=-1)
- warns(-1)
- options(warn=-1)
- warnings(-1)
Question 14: ___________ can be used to adjust the size of Waffle Charts
- kernel
- IRkernel
- Ikernel
- None of the options are correct
Question 15: >> Which of the following parameters are used to create waffle charts in R?
- colors
- rows
- title
- xlab
- All the options above are correct
Question 16: Choose the correct method to create a Box Plot in R
- ggplot(df) + geom_boxplot()
- ggplot(df, aes(x=label, y=value))
- ggplot(df, aes(x=label, y=value)) + geom_boxplot()
- None of the options are correct
Question 17: What is the term used to indicate the difference between the first and third quartiles?
- lower whisker and upper whisker.
- first quartile
- third quartile
- Interquartile Range
Question 18: Which function gives an object that represents an empty world map
- addMarkers
- addTiles
- leaflet
- All the options above are correct
Question 19: What is the use of the method addTiles() in R?
- To divide map in tiles.
- To zoom in the map to see different countries and streets in detail.
- To create tiles view of map.
- All the options above are correct
Question 20: Which function is used to create display of shiny app ?
- display()
- output functions
- fluidPage()
- input functions
Conclusion
Hopefully, this article will be useful for you to find all the Answers of Machine Learning With R of Cognitive Class and grab some premium knowledge with less effort. If this article really helped you in any way then make sure to share it with your friends on social media and let them also know about this amazing training. You can also check out our other course Answers. So, be with us guys we will share a lot more free courses and their exam/quiz solutions also and follow our Techno-RJ Blog for more updates.
I was recommended this web site via my cousin. I’m now not positive whether or not this put up is written by way of him as no one else realize such distinctive about my difficulty. You are amazing! Thanks!
I just could not depart your website before suggesting that I extremely enjoyed the standard info a person provide for your visitors? Is gonna be back often in order to check up on new posts
Thanks for the sensible critique. Me and my neighbor were just preparing to do a little research about this. We got a grab a book from our local library but I think I learned more clear from this post. I’m very glad to see such excellent info being shared freely out there.
Hello.This post was really interesting, especially because I was searching for thoughts on this issue last Saturday.
magnificent points altogether, you just gained a new reader. What would you recommend about your post that you made some days ago? Any positive?
Howdy! Quick question that’s entirely off topic. Do you know how to make your site mobile friendly? My website looks weird when browsing from my iphone. I’m trying to find a theme or plugin that might be able to resolve this problem. If you have any recommendations, please share. With thanks!
I like the helpful information you provide in your articles. I will bookmark your blog and check again here regularly. I’m quite certain I’ll learn many new stuff right here! Best of luck for the next!
I am not real superb with English but I line up this really leisurely to read .
Together with everything that appears to be building within this specific subject material, your points of view tend to be somewhat stimulating. On the other hand, I am sorry, but I do not subscribe to your whole plan, all be it exciting none the less. It looks to everybody that your opinions are generally not completely justified and in actuality you are generally yourself not even wholly convinced of the assertion. In any event I did enjoy reading through it.
I would like to thnkx for the efforts you have put in writing this blog. I am hoping the same high-grade blog post from you in the upcoming as well. In fact your creative writing abilities has inspired me to get my own blog now. Really the blogging is spreading its wings quickly. Your write up is a good example of it.
cialis 40mg usa cialis 5mg us ed pills comparison
buy cefadroxil 500mg generic combivir brand order finasteride sale
order estrace 1mg pill minipress 1mg generic order minipress 2mg pills
buy vermox for sale buy tadalafil 10mg generic buy tadalis 10mg online cheap
brand metronidazole buy trimethoprim cephalexin 125mg us
avana pill tadacip generic generic voltaren 50mg
cleocin price sildenafil over the counter purchase fildena online cheap
indomethacin 75mg drug buy generic cefixime 100mg cefixime 200mg pill
order nolvadex 10mg for sale buy generic rhinocort online buy ceftin 250mg online cheap
amoxicillin for sale biaxin 250mg ca generic clarithromycin 250mg
buy bimatoprost without a prescription desyrel over the counter desyrel 50mg drug
order clonidine 0.1 mg online cheap order meclizine 25mg tiotropium bromide order online
buy sildenafil for sale buy sildenafil 100mg without prescription sildenafil over the counter
order minocycline 100mg online cheap purchase hytrin pill buy actos 30mg online
isotretinoin order online azithromycin 500mg us order azithromycin 500mg without prescription
arava 10mg oral azulfidine brand azulfidine 500 mg us
azipro 500mg tablet cost omnacortil 40mg gabapentin 800mg canada
cialis 10mg canada viagra order online tadalafil tablet
buy oral stromectol buy stromectol 3mg generic order prednisone 10mg sale
levitra over the counter buy vardenafil generic buy hydroxychloroquine 400mg
order ramipril 10mg pill etoricoxib 60mg ca order etoricoxib generic
levitra uk purchase hydroxychloroquine online cheap hydroxychloroquine pill
asacol 800mg tablet mesalamine online order buy avapro no prescription
buy benicar 20mg pills verapamil online buy order depakote 500mg pills
buy clobetasol cheap buspirone price amiodarone 200mg drug
buy coreg 25mg order chloroquine 250mg sale aralen oral
buy diamox tablets order imuran 50mg online buy imuran 25mg online
olumiant 4mg generic olumiant usa where to buy atorvastatin without a prescription