Python NumPy quiz

Do you think you know NumPy? Test your NumPy skills with our NumPy quiz!

1 / 10

How can you concatenate two NumPy arrays ‘arr1’ and ‘arr2’ vertically?

np.concatenate([arr1, arr2], axis=0)

np.vstack([arr1, arr2])

np.append(arr1, arr2, axis=0)

All of the above

2 / 10

Which NumPy function is used to perform element-wise multiplication of two arrays?

np.multiply()

np.mult()

np.prod()

np.multiple()

3 / 10

What is the result of the following expression in NumPy: np.arange(1, 10, 2)?

array([1, 3, 5, 7, 9])

array([1, 2, 3, 4, 5, 6, 7, 8, 9])

array([2, 4, 6, 8])

array([1, 2, 3, 4, 5, 6, 7, 8])

4 / 10

What does the NumPy function np.mean() do?

It calculates the median of an array

It calculates the mode of an array

It calculates the arithmetic mean of an array

It calculates the standard deviation of an array

5 / 10

Which NumPy function is used to create an identity matrix?

np.identity()

np.eye()

np.ones()

np.zeros()

6 / 10

What is the correct way to import NumPy in Python?

import NumPy

import numpy

from numpy import numpy

import num_py

7 / 10

Which of the following data structures does NumPy introduce?

List

Set

Dictionary

Array

8 / 10

What is NumPy?

A database management system

A scientific computing library for Python

A web development framework

A machine learning platform

9 / 10

What is the main benefit of using NumPy arrays over Python lists?

NumPy arrays can hold elements of different data types

NumPy arrays are mutable

NumPy arrays offer better performance for numerical operations

NumPy arrays can be used as dictionary keys

10 / 10

How can you reshape a NumPy array with shape (4, 3) into a new array with shape (3, 4)?

arr.reshape((3, 4))

np.reshape(arr, (3, 4))

arr.resize((3, 4))

np.resize(arr, (3, 4))

Your score is