Data Science Questions and Answers – NumPy – 1

This set of Data Science Questions for campus interviews focuses on “NumPy – 1”.

1. Which of the following is contained in NumPy library?
a) n-dimensional array object
b) tools for integrating C/C++ and Fortran code
c) fourier transform
d) all of the mentioned
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2. Point out the wrong statement.
a) ipython is an enhanced interactive Python shell
b) matplotlib will enable you to plot graphics
c) rPy provides a lot of scientific routines that work on top of NumPy
d) all of the mentioned
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3. The ________ function returns its argument with a modified shape, whereas the ________ method modifies the array itself.
a) reshape, resize
b) resize, reshape
c) reshape2, resize
d) all of the mentioned
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4. To create sequences of numbers, NumPy provides a function __________ analogous to range that returns arrays instead of lists.
a) arange
b) aspace
c) aline
d) all of the mentioned
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5. Point out the correct statement.
a) NumPy main object is the homogeneous multidimensional array
b) In Numpy, dimensions are called axes
c) Numpy array class is called ndarray
d) All of the mentioned
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6. Which of the following function stacks 1D arrays as columns into a 2D array?
a) row_stack
b) column_stack
c) com_stack
d) all of the mentioned
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7. ndarray is also known as the alias array.
a) True
b) False
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8. Which of the following method creates a new array object that looks at the same data?
a) view
b) copy
c) paste
d) all of the mentioned
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9. Which of the following function can be used to combine different vectors so as to obtain the result for each n-uplet?
a) iid_
b) ix_
c) ixd_
d) all of the mentioned
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10. ndarray.dataitemSize is the buffer containing the actual elements of the array.
a) True
b) False
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