InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Which of the following package is implemented by lattice plotting system?(a) grDevices(b) grid(c) graphics(d) all of the mentionedI had been asked this question by my college director while I was bunking the class.The above asked question is from Plotting Systems topic in portion Data Analysis and Research of Data Science |
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Answer» Right CHOICE is (b) GRID |
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| 52. |
Which of the following is an example of graphics device?(a) PDF(b) SVG(c) JPEG(d) All of the mentionedI have been asked this question in a job interview.I'm obligated to ask this question of Graphics Devices topic in section Data Analysis and Research of Data Science |
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Answer» The correct CHOICE is (d) All of the mentioned |
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| 53. |
Which of the following statement is used for importing knitr library?(a) library(knitr)(b) import knitr(c) lib(knitr)(d) none of the mentionedI have been asked this question by my college professor while I was bunking the class.My question is based upon knitr topic in section Data Analysis and Research of Data Science |
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Answer» Correct ANSWER is (a) LIBRARY(KNITR) |
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| 54. |
dev.copy2pdf specifically copy a plot to a PDF file.(a) True(b) FalseThis question was posed to me by my school principal while I was bunking the class.I'd like to ask this question from Graphics Devices in chapter Data Analysis and Research of Data Science |
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Answer» Right answer is (a) True |
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| 55. |
Which of the following step is not required in data analysis?(a) Synthesize results(b) Create reproducible code(c) Interpret results(d) None of the mentionedI had been asked this question during an interview.This intriguing question originated from Introduction to Reproducible Research topic in division Data Analysis and Research of Data Science |
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Answer» CORRECT choice is (d) NONE of the mentioned Explanation: The DATA SET may DEPEND on your goal. |
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| 56. |
Which of the following can be used for data analysis model?(a) CRAN(b) CPAN(c) CTAN(d) All of the mentionedThe question was posed to me in an internship interview.This is a very interesting question from Introduction to Reproducible Research topic in division Data Analysis and Research of Data Science |
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Answer» RIGHT answer is (d) All of the mentioned Easy explanation - Different problems require different APPROACHES and EXPERTISE. |
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| 57. |
Which of the following information is not given by five-number summary?(a) Mean(b) Median(c) Mode(d) All of the mentionedI have been asked this question in an internship interview.I'm obligated to ask this question of Exploratory Graphs in chapter Data Analysis and Research of Data Science |
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Answer» CORRECT OPTION is (c) Mode For explanation: The mode is the VALUE that appears most often in a SET of data. |
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| 58. |
Which of the following is finally produced by Hierarchical Clustering?(a) final estimate of cluster centroids(b) tree showing how close things are to each other(c) assignment of each point to clusters(d) all of the mentionedI got this question during an internship interview.I would like to ask this question from Clustering topic in chapter Data Analysis and Research of Data Science |
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Answer» RIGHT CHOICE is (b) tree showing how close things are to each other Easiest explanation - Hierarchical CLUSTERING is an agglomerative approach. |
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| 59. |
How many stages commonly occurs in creation of plot?(a) 2(b) 5(c) 8(d) All of the mentionedI had been asked this question in a national level competition.This intriguing question comes from Plotting Systems topic in division Data Analysis and Research of Data Science |
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Answer» Correct OPTION is (a) 2 |
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| 60. |
There are mainly three types of file devices.(a) True(b) FalseI have been asked this question in an online quiz.The query is from Graphics Devices in chapter Data Analysis and Research of Data Science |
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Answer» Correct answer is (b) False |
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| 61. |
Which of the following system most often don’t have postscript viewer?(a) Windows(b) Linux(c) Mac(d) All of the mentionedI have been asked this question in an online quiz.I need to ask this question from Graphics Devices in chapter Data Analysis and Research of Data Science |
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Answer» Right CHOICE is (a) Windows |
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| 62. |
Point out the wrong statement.(a) For quick visualizations and exploratory analysis, usually you want to use the screen device(b) Functions like xyplot in lattice will not default to sending a plot to the screen device(c) Not all graphics devices are available on all platforms(d) None of the mentionedThe question was posed to me at a job interview.Origin of the question is Graphics Devices in portion Data Analysis and Research of Data Science |
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Answer» Correct option is (b) Functions like xyplot in LATTICE will not default to sending a plot to the SCREEN device |
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| 63. |
Which of the following package by Yihui is built in to RStudio environment?(a) rpy2(b) knitr(c) ggplot2(d) none of the mentionedThe question was posed to me in an interview.My question is based upon Literate Statistical Programming in portion Data Analysis and Research of Data Science |
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Answer» CORRECT CHOICE is (b) knitr The EXPLANATION is: It can be EXPORTED to pdf and HTML. |
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| 64. |
knitr supports only one documentation language.(a) True(b) FalseI had been asked this question in quiz.The query is from Literate Statistical Programming in chapter Data Analysis and Research of Data Science |
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Answer» The CORRECT ANSWER is (b) False |
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| 65. |
Which of the following should be set on chunk by chunk basis to store results of computation?(a) cache=TRUE(b) cache=FALSE(c) caching=TRUE(d) none of the mentionedThe question was asked in my homework.The doubt is from Literate Statistical Programming in chapter Data Analysis and Research of Data Science |
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Answer» Correct answer is (a) CACHE=TRUE |
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| 66. |
What is one way in which the knitr system differs from Sweave?(a) knitr allows for the use of markdown instead of LaTeX(b) knitr is written in python instead of R(c) knitr lacks features like caching of code chunks(d) none of the mentionedThe question was posed to me during an interview for a job.I would like to ask this question from Literate Statistical Programming in division Data Analysis and Research of Data Science |
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Answer» Right ANSWER is (a) knitr allows for the use of MARKDOWN instead of LaTeX |
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| 67. |
Which of the following graph can be used for simple summarization of data?(a) Scatterplot(b) Overlaying(c) Barplot(d) All of the mentionedThis question was addressed to me in quiz.Question is taken from Exploratory Graphs in portion Data Analysis and Research of Data Science |
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Answer» Correct ANSWER is (c) Barplot |
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| 68. |
Which of the following clustering type has characteristic shown in the below figure?(a) Partitional(b) Hierarchical(c) Naive bayes(d) None of the mentionedI have been asked this question in homework.I would like to ask this question from Clustering in section Data Analysis and Research of Data Science |
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Answer» CORRECT answer is (B) Hierarchical Easiest EXPLANATION - Hierarchical clustering groups data over a variety of scales by creating a CLUSTER tree or dendrogram. |
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| 69. |
Which type of graph is shown in the following figure?(a) Scatterplot(b) Barplot(c) Overlaying(d) None of the mentionedI got this question in an online interview.This interesting question is from Plotting Systems topic in chapter Data Analysis and Research of Data Science |
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Answer» The correct answer is (B) Barplot |
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| 70. |
Which of the following is alternative technique toprincipal component analysis?(a) Factor analysis(b) Independent components analysis(c) Latent semantic analysis(d) All of the mentionedThe question was posed to me during an online interview.This interesting question is from Graphics Devices topic in division Data Analysis and Research of Data Science |
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Answer» The correct choice is (d) All of the mentioned |
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| 71. |
Point out the correct statement.(a) On Mac, the screen device is launched with quartz(b) On Windows, the screen device is launched with wind(c) On Unix, the screen device is launched with x12(d) All of the mentionedThe question was posed to me in quiz.My doubt is from Graphics Devices in chapter Data Analysis and Research of Data Science |
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Answer» The CORRECT choice is (a) On MAC, the screen device is LAUNCHED with quartz |
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| 72. |
Point out the correct statement.(a) An article is stream of code and text(b) Analysis code is divided in to code chunks only(c) Literate programs are tangled to produce human readable documents(d) None of the mentionedThis question was posed to me in quiz.I want to ask this question from Literate Statistical Programming topic in section Data Analysis and Research of Data Science |
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Answer» Right choice is (a) An article is STREAM of code and TEXT |
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| 73. |
Original idea comes of Literate Statistical Practice from _______________(a) Don Knuth(b) Don Cutting(c) Douglas Cutting(d) All of the mentionedI got this question by my college director while I was bunking the class.My enquiry is from Literate Statistical Programming in chapter Data Analysis and Research of Data Science |
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Answer» The CORRECT OPTION is (a) Don Knuth |
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| 74. |
Which of the following is useful way to put text, code, data, output all in one document?(a) Literate statistical programming(b) Object oriented programming(c) Descriptive programming(d) All of the mentionedThis question was posed to me by my school principal while I was bunking the class.This question is from Literate Statistical Programming topic in division Data Analysis and Research of Data Science |
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Answer» Correct CHOICE is (a) Literate STATISTICAL programming |
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| 75. |
Which of the following is required for literate programming?(a) documentation language(b) mapper language(c) reducer language(d) all of the mentionedI got this question in exam.Asked question is from Literate Statistical Programming in section Data Analysis and Research of Data Science |
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Answer» CORRECT option is (a) documentation language The BEST explanation: PROGRAMMING language is ALSO REQUIRED for literate programming. |
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| 76. |
Which of the following global options are available for figures in knitr?(a) fig.height(b) fig.size(c) fig.breadth(d) all of the mentionedI got this question in an interview for internship.The question is from knitr in section Data Analysis and Research of Data Science |
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Answer» RIGHT OPTION is (a) fig.height For EXPLANATION: fig.height has NUMERIC VALUE. |
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| 77. |
Point out the correct statement with respect to replication.(a) Focuses on the validity of the data analysis(b) Focuses on the validity of the scientific claim(c) Arguably a minimum standard for any scientific study(d) All of the mentionedThe question was asked in semester exam.This intriguing question comes from Introduction to Reproducible Research in section Data Analysis and Research of Data Science |
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Answer» RIGHT OPTION is (a) Focuses on the validity of the data analysis Best explanation: Data replication if the same data is STORED on MULTIPLE storage device. |
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| 78. |
Which of the following problem is solved by reproducibility?(a) Scalability(b) Data availability(c) Improved data analysis(d) None of the mentionedThis question was posed to me in a job interview.This intriguing question comes from Introduction to Reproducible Research in division Data Analysis and Research of Data Science |
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Answer» Correct CHOICE is (b) Data availability |
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| 79. |
Which of the following is characteristic of exploratory graph?(a) Made slowly(b) Axes are not cleaned up(c) Color is used for personal information(d) All of the mentionedThis question was addressed to me during a job interview.This key question is from Exploratory Graphs in chapter Data Analysis and Research of Data Science |
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Answer» Correct answer is (c) Color is USED for personal information |
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| 80. |
Which of the following clustering requires merging approach?(a) Partitional(b) Hierarchical(c) Naive Bayes(d) None of the mentionedI have been asked this question in final exam.This interesting question is from Clustering topic in portion Data Analysis and Research of Data Science |
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Answer» Correct choice is (B) Hierarchical |
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| 81. |
Point out the wrong statement.(a) Plot are created with multiple functions only(b) Plots are created with both single and multiple function calls(c) Annotation in plot is not especially intuitive(d) None of the mentionedI got this question in a national level competition.I want to ask this question from Plotting Systems in section Data Analysis and Research of Data Science |
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Answer» The CORRECT OPTION is (a) Plot are CREATED with multiple functions only |
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