QUIZ ON : python - NUMPY BASICS

NUMPY BASICS

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Question No# : 01 out of 50

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

A. 0

B. 1

C. 2

D. 3

Question No# : 02 out of 50

What is NumPy?

A. A machine learning library

B. A web development framework

C. A numerical computing library in Python

D. A data visualization tool

Question No# : 03 out of 50

What is a correct method to join two or more arrays?

A. np.concatenate()

B. np.join()

C. np.array_join()

D. np.join_array()

Question No# : 04 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# : 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.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# : 07 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# : 08 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# : 09 out of 50

What is the purpose of zeros() function used in NumPy array ?

A. To make a Matrix with all diagonal element 0

B. To make a Matrix with first row 0

C. To make a Matrix with all elements 0

D. None of the above

Question No# : 10 out of 50

How do you import NumPy in Python?

A. import numpy as np

B. import numPy

C. from python import numpy

D. using numpy

Question No# : 11 out of 50

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

A. int32

B. int

C. float

D. none of these

Question No# : 12 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# : 13 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# : 14 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# : 15 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# : 16 out of 50

What is a correct syntax to print the numbers [3, 4, 5] from the array below:<pre>arr = np.array([1,2,3,4,5,6,7])</pre>

A. print(arr[2:4])

B. print(arr[2:5])

C. print(arr[2:6])

D. print(arr[3:6])

Question No# : 17 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# : 18 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# : 19 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# : 20 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# : 21 out of 50

Which of the following is the primary object in NumPy for representing arrays?

A. Array

B. List

C. Matrix

D. Tuple

Question No# : 22 out of 50

How to import numpy module?

A. from numpy import *

B. import numpy

C. import numpy as my_numpy

D. All of above

Question No# : 23 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# : 24 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# : 25 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# : 26 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# : 27 out of 50

What is a correct syntax to print the number 8 from the array below:<pre>arr = np.array([[1,2,3,4,5], [6,7,8,9,10]])</pre>

A. print(arr[3,0])

B. print(arr[1,2])

C. print(arr[7,2])

D. None of The Above

Question No# : 28 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# : 29 out of 50

Numpy array's dimension are known as

A. axes

B. degree

C. cordinate

D. points

Question No# : 30 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# : 31 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# : 32 out of 50

Getting and setting smaller subarrays within a larger array

A. Indexing

B. Slicing

C. Reshaping

D. None of the above

Question No# : 33 out of 50

What is the purpose of the np.array() function in NumPy?

A. It creates a new Python list.

B. It creates a NumPy array.

C. It performs element-wise addition.

D. It calculates the mean of an array.

Question No# : 34 out of 50

How can you perform element-wise addition of two NumPy arrays arr1 and arr2?

A. arr1 + arr2

B. add(arr1, arr2)

C. arr1.add(arr2)

D. elementwise_add(arr1, arr2)

Question No# : 35 out of 50

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

A. List

B. Array

C. Matrix

D. Set

Question No# : 36 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# : 37 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# : 38 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# : 39 out of 50

NumPy arrays can be

A. Indexed

B. Sliced

C. Iterated

D. All of the mentioned above

Question No# : 40 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# : 41 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# : 42 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# : 43 out of 50

NumPY stands for:

A. Numbering Python

B. Number In Python

C. Numerical Python

D. None of the above

Question No# : 44 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# : 45 out of 50

Which of the following arrays is a two dimensional (2-D) array?

A. 89

B. [1,2,3,4]

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

D. [[2 3 5][ 4 5 6][4 5 6]]

Question No# : 46 out of 50

Attribute of array determines

A. Size, shape

B. memory consumption

C. data type of array

D. All of these

Question No# : 47 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# : 48 out of 50

Which syntax would print the last 3 numbers from the array below:<pre>arr = np.array([1,2,3,4,5,6,7])</pre>

A. print(arr[3:])

B. print(arr[3])

C. print(arr[:3])

D. print(arr[4:])

Question No# : 49 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# : 50 out of 50

NumPY stands for?

A. Numbering Python

B. Number in Python

C. Numerical Python

D. Number for Python