51. How many parameters does the method plot() accept? A. 6 B. 7 C. 8 D. 9 Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D Solution: The method plot() accepts a total of 9 parameters.
52. What is the need for bubble charts? A. Represent 2D data B. Represent 3D data C. Represent 2D and 3D data D. None of the mentioned Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B Solution: Bubble charts are used to represent three-dimensional data.
53. Which of the following is the initial function used to create a bubble chart natively in R? A. init() B. chart(bubble) C. symbols() D. none of the mentioned Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C Solution: The method symbols() is used to create a bubble chart natively in R.
54. What is the purpose of the method symbols in R? A. Draw symbols B. Draw other shapes C. Draw symbols and other shapes D. None of the mentioned Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B Solution: The symbols() function can be used to draw other shapes on a plot; for more information about this type ?symbols at the R console.
55. How to save chart as a Window metafile? A. metafile() B. win.metafile() C. file() D. metawin() Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B Solution: The method win.metafile([filename]) is used to save chart as a Window metafile.
56. Which is the method used to save chart as a ps file? A. ps() B. postscript() C. script() D. post(script) Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B Solution: The syntax for the method to save chart as a ps file is : postscript([filename]).
57. Which of the following are methods used to save charts? A. pdf() B. jpeg() C. bmp() D. all of the mentioned Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D Solution: All of the above mentioned methods are used to save charts in different modes.
58. Which is the method used to draw a bar plot? A. bar_plot() B. plot(bar) C. barplot() D. plotbar() Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C Solution: The method barplot() can be used to draw a bar plot.
59. What is the purpose of the method par()? A. Makes the text vertical B. Makes the text horizontal C. Makes the text diagonal D. None of the mentioned Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B Solution: With the method par(), you can make the text horizontal.
60. How many parameters does the WebPageTest API accept? A. 5 B. 6 C. 7 D. 8 Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D Solution: The WebPageTest API accepts totally 8 parameters, namely url, location, runs, fvonly, private, block, f, k.
