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MCQs

Total Questions : 10
Question 1. Point out the correct statement:
  1.    shiny project is a directory containing at least three parts
  2.    shiny project is a file containing at least three parts
  3.    shiny project consist is a directory containing only one part
  4.    None of the Mentioned
 Discuss Question
Answer: Option D. -> None of the Mentioned


shiny project consist is a directory containing at least two parts.


Question 2. Point out the correct statement:
  1.    gvisAnnotationChart returns list of class gvis" and list"
  2.    The gvisAreaChart function reads a data.frame and creates text output referring to the Google Visualization API
  3.    gvisAreaChart returns list of class gvis" and list"
  4.    All of the Mentioned
 Discuss Question
Answer: Option D. -> All of the Mentioned


This can be included into a web page, or as a stand-alone page.


Question 3. Which of the following statement generates a html slide deck from index.Rmd ?
  1.    slidify(index.Rmd")
  2.    lib.slidify(index.Rmd")
  3.    slidifylib(index.Rmd")
  4.    All of the Mentioned
 Discuss Question
Answer: Option A. -> slidify(index.Rmd")


It is a static file, which means that you can open it in your browser locally and it should display fine.


Question 4. Point out the correct statement:
  1.    Slidify allows embedded code chunks
  2.    Slidify presentation cannot be shared easily
  3.    Slidify is difficult to use
  4.    None of the Mentioned
 Discuss Question
Answer: Option A. -> Slidify allows embedded code chunks


Slidify allows mathematical formulas as well.


Question 5. Which of the following function can interrupt execution and can be called continuously ?
  1.    browser()
  2.    browse()
  3.    search()
  4.    All of the Mentioned
 Discuss Question
Answer: Option A. -> browser()


Debugging shiny apps can be difficult.


Question 6. Which of the following is used for creating interacting tables ?
  1.    gvisGeoChart
  2.    gvisTable
  3.    gvisLineChart
  4.    All of the Mentioned
 Discuss Question
Answer: Option B. -> gvisTable


gvisLineChart is used for creating line charts.


Question 7. Point out the correct statement:
  1.    NumPy's main object is the homogeneous multidimensional array
  2.    In Numpy, dimensions are called axes
  3.    Numpy's array class is called ndarray
  4.    All of the Mentioned
 Discuss Question
Answer: Option D. -> All of the Mentioned


The number of axes is called rank.


Question 8. Which of the following set the floating-point error callback function or log object ?
  1.    setter
  2.    settercall
  3.    setterstack
  4.    All of the Mentioned
 Discuss Question
Answer: Option B. -> settercall




Question 9. Which of the following function stacks 1D arrays as columns into a 2D array?
  1.    row_stack
  2.    column_stack
  3.    com_stack
  4.    All of the Mentioned
 Discuss Question
Answer: Option B. -> column_stack


column_stack is equivalent to vstack only for 1D arrays.


Question 10. Point out the wrong statement:
  1.    Each universal function takes array inputs and produces array outputs
  2.    Broadcasting is used throughout NumPy to decide how to handle disparately shaped arrays
  3.    The output of the ufunc is necessarily an ndarray, if all input arguments are ndarrays
  4.    All of the Mentioned
 Discuss Question
Answer: Option C. -> The output of the ufunc is necessarily an ndarray, if all input arguments are ndarrays


The output of the ufunc is not necessarily an ndarray, if all input arguments are not ndarrays.


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