Data Science

NumPy

Question 1
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 2
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 3
Marks : +2 | -2
Pass Ratio : 100%
Point out the wrong statement.
A universal function is a function that operates on ndarrays in an element-by-element fashion
In Numpy, universal functions are instances of the numpy.ufunction class
Many of the built-in functions are implemented in compiled C code
All of the mentioned
Explanation:
ufunc instances can also be produced using the frompyfunc factory function.
Question 4
Marks : +2 | -2
Pass Ratio : 100%
Which of the following attribute should be used while checking for type combination input and output?
.types
.type
.class
all of the mentioned
Explanation:
Universal functions in NumPy are flexible enough to have mixed type signatures.
Question 5
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 6
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.
Question 7
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 8
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 9
Marks : +2 | -2
Pass Ratio : 100%
Point out the wrong statement.
Each universal function takes array inputs and produces array outputs
Broadcasting is used throughout NumPy to decide how to handle disparately shaped arrays
The output of the ufunc is necessarily an ndarray, if all input arguments are ndarrays
All of the mentioned
Explanation:
The output of the ufunc is not necessarily an ndarray, if all input arguments are not ndarrays.
Question 10
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.