QUIZ ON : python - NUMPY BASICS

NUMPY BASICS

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Question No# : 01 out of 50

Who developed NumPy?

A. Guido van Rossum

B. Travis Oliphant

C. Wes McKinney

D. Jim Hugunin

Question No# : 02 out of 50

What will be the output of following Python code?<pre>import numpy as np a = np.array([(10,20,30)]) print(a.itemsize)</pre><div> </div>

A. 10

B. 9

C. 4

D. All of the mentioned above

Question No# : 03 out of 50

Which of the following Numpy operation are correct?

A. Mathematical and logical operations on arrays.

B. Fourier transforms and routines for shape manipulation.

C. Operations related to linear algebra.

D. All of the above

Question No# : 04 out of 50

What will be the output of the following ?<pre>import numpy as np a = np.arange(1,5,2) print(a)</pre>

A. [1 3 5]

B. [1 3]

C. [1,3]

D. [1,2,3,4,5]

Question No# : 05 out of 50

What will be the output of the following ?<pre>import numpy as np a = np.array([1, 5, 4, 7, 8]) a = a + 1 print(a[1])</pre><div> </div>

A. 4

B. 5

C. 6

D. 7

Question No# : 06 out of 50

What will be the output of the following ?<pre>import numpy as np a = np.arange(5,1) print(a)</pre>

A. [ ]

B. [1 2 3 4 5]

C. [5 4 3 2 1]

D. [1 2 3 4]

Question No# : 07 out of 50

What is a correct syntax to check the number of dimensions in an array?

A. np.ndim(array_name)

B. array_name.ndim()

C. np.dim(array_name)

D. array_name.dim

Question No# : 08 out of 50

NumPY stands for?

A. Numbering Python

B. Number in Python

C. Numerical Python

D. Number for Python

Question No# : 09 out of 50

How can you create a NumPy array from a Python list?

A. numpy.array(list)

B. numpy.array(list, dtype=float)

C. Both a and b

D. None of the above

Question No# : 10 out of 50

The most important object defined in NumPy is an N-dimensional array type called?

A. ndarray

B. narray

C. nd_array

D. darray

Question No# : 11 out of 50

What are the attributes of numpy array?

A. shape, dtype, ndim

B. objects, type, list

C. objects, non vectorization

D. Unicode and shape

Question No# : 12 out of 50

What is a correct syntax to create an array of type float?

A. arr=np.array([1,2,3,4],dtype='float')

B. arr=np.array([1,2,3,4],dtype='f')

C. arr=np.array([1,2,3,4],dtype=float)

D. All of the above

Question No# : 13 out of 50

What is default data type of NumPy Array

A. float

B. integer

C. string

D. boolean

Question No# : 14 out of 50

Which of the following functions that retrieve information from the data type?

A. Constructors

B. Retriever

C. Finder

D. Selectors

Question No# : 15 out of 50

What is the output of the following code ?<pre>import numpy as np a = np.array([[1,2,3]]) print(a.shape)</pre>

A. (2,3)

B. (3,1)

C. (1,3)

D. None of These

Question No# : 16 out of 50

What will be the output of the following ?<pre>import numpy as np a = np.arange(1,3,.5) print(a)</pre>

A. [1 2 3]

B. [1. 1.5 2. 2.5]

C. [1. 1.5 2. 2.5 3]

D. [1 1.5 2 2.5 3]

Question No# : 17 out of 50

What is the use of the zeros() function in Numpy array in python ?

A. To make a Matrix with all element 0

B. To make a Matrix with all diagonal element 0

C. To make a Matrix with first row 0

D. None of the above

Question No# : 18 out of 50

What will be output for the following code?<pre>import numpy as np a = np.array([1,2,3,5,8]) b = np.array([0,3,4,2,1]) c = a + b c = c*a print (c[2])</pre>

A. 18

B. 20

C. 21

D. 22

Question No# : 19 out of 50

Numpy array's dimension are known as

A. axes

B. degree

C. cordinate

D. points

Question No# : 20 out of 50

What is a correct syntax to create a NumPy array?

A. np.array([4,5,6])

B. np.create_array([4,5,6])

C. np.createArray([4,5,6])

D. np.numpyArray([4,5,6])

Question No# : 21 out of 50

What does pip stand for python?

A. unlimited length

B. all private members must have leading and trailing underscores

C. Preferred Installer Program

D. None of the above

Question No# : 22 out of 50

NumPy arrays can be

A. Indexed

B. Sliced

C. Iterated

D. All of the mentioned above

Question No# : 23 out of 50

The number of axes in an ndarray is called its ___

A. rank

B. dtype

C. shape

D. None of these

Question No# : 24 out of 50

NumPY stands for:

A. Numbering Python

B. Number In Python

C. Numerical Python

D. None of the above

Question No# : 25 out of 50

NumPy arrays used over lists because

A. NumPy arrays have contiguous memory location

B. They are more speedy to work with

C. They are more convenient to deal with

D. All of the above

Question No# : 26 out of 50

What will be the output of the following ?<pre>import numpy as np a=np.array([2,4,1]) b=a a[1]=3 print(b)</pre><div> </div>

A. [2 4 1]

B. [3 4 1]

C. [2 3 1]

D. [2 4 3]

Question No# : 27 out of 50

Regarding creating ndarray, choose the build in functions in numpy.

A. np.array()

B. np.zeros()

C. np.empty()

D. All of the above

Question No# : 28 out of 50

Which function is used to generate evenly spaced values within a specified range?

A. numpy.linspace()

B. numpy.range()

C. numpy.arrange()

D. numpy.spaceline()

Question No# : 29 out of 50

Using ndim we can find

A. We can find the dimension of the array

B. Size of array

C. Operational activities on Matrix

D. None of the mentioned above

Question No# : 30 out of 50

Getting and setting the value of individual array elements:

A. Indexing

B. Slicing

C. Reshaping

D. None of the above

Question No# : 31 out of 50

What will be the output of the following ?<pre>import numpy as np print(np.maximum([2, 3, 4], [1, 5, 2]))</pre>

A. [1 5 2]

B. [1 5 4]

C. [2 3 4]

D. [2 5 4]

Question No# : 32 out of 50

What is a correct syntax to print the first item of an array?

A. print(arr[1])

B. print(arr,0)

C. print(arr,1)

D. None of These

Question No# : 33 out of 50

What is the output of the following code ?<pre>import numpy as np y = np.array([[11, 12, 13, 14], [32, 33, 34, 35]]) print(y.ndim)</pre>

A. 1

B. 2

C. 3

D. 0

Question No# : 34 out of 50

What does size attribute in numpy use to find?

A. Number of Rows and Column in array

B. Size of each items in array

C. Number of elements in array

D. Largest element of an array

Question No# : 35 out of 50

What is zeros() function in numpy use to?

A. make a matrix with first column 0

B. make a matrix with all elements 0

C. make a matrix with diagonal elements 0

D. All of the above

Question No# : 36 out of 50

What is the output of following code ?<pre>a = np.array([[1,2,3],[4,5,6]]) print(a.shape)</pre>

A. (2,3)

B. (3,2)

C. (1,1)

D. none of these

Question No# : 37 out of 50

What will be the output of the following code?<pre>import numpy as np a=np.array([1,2,3]) print(a.ndim)</pre><div> </div>

A. 1

B. 2

C. 3

D. 0

Question No# : 38 out of 50

What will be the output of the following ?<pre>import numpy as np a=np.array([2,4]) b=np.array([3,5]) c=a*b print(c)</pre><div> </div>

A. [ 2 4 3 5]

B. [ 6 20]

C. [ 6 12 10 20]

D. 26

Question No# : 39 out of 50

What will be output for the following code?<pre>import numpy as np a=np.array([[1,2,3],[0,1,4]]) print (a.size)</pre><div> </div>

A. 1

B. 5

C. 6

D. 4

Question No# : 40 out of 50

What will be output for the following code?<pre>import numpy as np ary = np.array([1,2,3,5,8]) ary = ary + 1 print (ary[1])</pre><div> </div>

A. 0

B. 1

C. 2

D. 3

Question No# : 41 out of 50

Which of the following is used to find the largest element in numpy array

A. numpy.maximum()

B. numpy.arraymax()

C. numpy.amax()

D. numpy.big()

Question No# : 42 out of 50

How can you import NumPy in a Python script?

A. import numpy

B. import np

C. from math import numpy

D. import numPy as np

Question No# : 43 out of 50

empty( ) function used to create a NumPy array which contained the values

A. Filled with Zero

B. Filled with Blank space

C. Filled with random garbage value

D. Filled with One

Question No# : 44 out of 50

What is the output of the following code?<pre>import numpy as np a = np.array([1,2,3,5,8]) b = np.array([0,1,5,4,2]) c = a + b c = c*a print (c[2])</pre>

A. 6

B. 24

C. 0

D. None of these

Question No# : 45 out of 50

What will be the output of the following ?<pre>import numpy as np a = np.array([[ 1,2,3,4], [5,6,7,8], [9,10,11,12]]) print(a[2,2])</pre>

A. 7

B. 11

C. 10

D. 8

Question No# : 46 out of 50

What will be output for the following code ?<pre>import numpy as np a = np.array([[1, 2, 3],[0,1,4],[11,22,33]]) print (a.size)</pre><div> </div>

A. 1

B. 3

C. 9

D. 4

Question No# : 47 out of 50

What will be the output of the following ?<pre>import numpy as np a = np.array( [2, 3, 4, 5] ) b = np.arange(4) print(a+b)</pre>

A. [2 3 4 5]

B. [3 4 5 6]

C. [1 2 3 4]

D. [2 4 6 8]

Question No# : 48 out of 50

What will be the output of the following ?<pre>import numpy as np a=np.array([2,4,1]) b=a.copy() a[1]=3 print(b)</pre>

A. [2 4 1]

B. [2 3 1]

C. [3 4 1]

D. [2 4 3]

Question No# : 49 out of 50

Which of the following returns an array of ones with the same shape and type as a given array?

A. all_like

B. ones_like

C. one_alike

D. all of the mentioned

Question No# : 50 out of 50

What is the main object type in NumPy that represents homogeneous arrays?

A. List

B. Array

C. Matrix

D. Set