Data Science

NumPy

Question 1
Marks : +2 | -2
Pass Ratio : 100%
Some ufuncs can take output arguments.
True
False
Explanation:
All ufuncs can take output arguments. If necessary, output will be cast to the data-type of the provided output array.
Question 2
Marks : +2 | -2
Pass Ratio : 100%
Which of the following is contained in NumPy library?
n-dimensional array object
tools for integrating C/C++ and Fortran code
fourier transform
all of the mentioned
Explanation:
NumPy is the fundamental package for scientific computing with Python.
Question 3
Marks : +2 | -2
Pass Ratio : 100%
___________ decompose the elements of x into mantissa and twos exponent.
trunc
fmod
frexp
ldexp
Explanation:
fmod function return the element-wise remainder of division.
Question 4
Marks : +2 | -2
Pass Ratio : 100%
Which of the following method creates a new array object that looks at the same data?
view
copy
paste
all of the mentioned
Explanation:
The copy method makes a complete copy of the array and its data.
Question 5
Marks : +2 | -2
Pass Ratio : 100%
ndarray is also known as the alias array.
True
False
Explanation:
numpy.array is not the same as the Standard Python Library class array.array.
Question 6
Marks : +2 | -2
Pass Ratio : 100%
Which of the following set the floating-point error callback function or log object?
setter
settercall
setterstack
all of the mentioned
Explanation:
seterr sets how floating-point errors are handled.
Question 7
Marks : +2 | -2
Pass Ratio : 100%
Which of the following returns an array of ones with the same shape and type as a given array?
all_like
ones_like
one_alike
all of the mentioned
Explanation:
The optional output arguments of the function can be used to help you save memory for large calculations.
Question 8
Marks : +2 | -2
Pass Ratio : 100%
Which of the following function stacks 1D arrays as columns into a 2D array?
row_stack
column_stack
com_stack
all of the mentioned
Explanation:
column_stack is equivalent to vstack only for 1D arrays.
Question 9
Marks : +2 | -2
Pass Ratio : 100%
The ________ function returns its argument with a modified shape, whereas the ________ method modifies the array itself.
reshape, resize
resize, reshape
reshape2, resize
all of the mentioned
Explanation:
If a dimension is given as -1 in a reshaping operation, the other dimensions are automatically calculated.
Question 10
Marks : +2 | -2
Pass Ratio : 100%
Point out the wrong statement.
ipython is an enhanced interactive Python shell
matplotlib will enable you to plot graphics
rPy provides a lot of scientific routines that work on top of NumPy
all of the mentioned
Explanation:
SciPy provides a lot of scientific routines that work on top of NumPy.