Data Science

NumPy

Question 1
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.
Question 2
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 3
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 4
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 5
Marks : +2 | -2
Pass Ratio : 100%
The array object returned by __array_prepare__ is passed to the ufunc for computation.
True
False
Explanation:
If the class has an __array_wrap__ method, the returned ndarray result will be passed to that method just before passing control back to the caller.
Question 6
Marks : +2 | -2
Pass Ratio : 100%
ndarray.dataitemSize is the buffer containing the actual elements of the array.
True
False
Explanation:
ndarray.data is the buffer containing the actual elements of the array.
Question 7
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 8
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 9
Marks : +2 | -2
Pass Ratio : 100%
Which of the following function take only single value as input?
iscomplex
minimum
fmin
all of the mentioned
Explanation:
iscomplex function returns a bool array, where true if input element is complex.
Question 10
Marks : +2 | -2
Pass Ratio : 100%
Which of the following sets the size of the buffer used in ufuncs?
bufsize(size)
setsize(size)
setbufsize(size)
all of the mentioned
Explanation:
Adjusting the size of the buffer may therefore alter the speed at which ufunc calculations of various sorts are completed.