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Data Science MCQ Quiz (Multiple Choice Questions And Answers)

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11. A perfect negative correlation is signified by ____________

  • -1
  • 1
  • 0
  • None

12. ———– function from scipy is used to calculate the distance between all pairs of points in a given set.

  • scipy.spatial.distance.cdist()
  • distance(x1,y1)
  • scipy.spatial.distance.measure()
  • scipy.spatial.distance()

13. In dataframe to compute summary statistics like mean, standard deviation, min and max count etc for each numerical column ———- function is used..

  • sort()
  • describe()
  • head()
  • display()

14. A correct way to preprocess the data When performing regression or classification is

  • Normalize the data ? PCA ? training
  • PCA ? normalize PCA output ? training
  • Normalize the data ? PCA ? normalize PCA output ? training
  • None

15. Converting the Numpy array to the list in python requires

  • array.list
  • list(array)
  • list.array
  • None