Python and NumPy Quiz

What is NumPy?

• NumPy is a Python library used for numerical computing.

• NumPy is a programming language.

• NumPy is used for web development.

• NumPy is a database management system.

Which of the following is the correct way to import NumPy?

• import numpy as numpy

• import numpy as npy

• import numpy as n

• import numpy as np

How do you create a NumPy array?

• numpy.create_array()

• numpy.array()

• numpy.array([])

• numpy.make_array()

What is the result of the following code? import numpy as np arr = np.array([1, 2, 3, 4, 5]) print(arr[2])

• 2

• 3

• 4

• 1

What is the result of the following code? import numpy as np arr = np.array([[1, 2, 3], [4, 5, 6]]) print(arr[1, 2])

• 6

• 5

• 1

• 2

What is the result of the following code? import numpy as np arr = np.array([[1, 2, 3], [4, 5, 6]]) print(arr[:, 1])

• [1, 4]

• [2, 4]

• [3, 6]

• [2, 5]

What is the result of the following code? import numpy as np arr = np.array([[1, 2, 3], [4, 5, 6]]) print(arr[1:, 1:])

• [[1, 2, 3], [4, 5, 6]]

• [[5, 6]]

• [[2, 3], [5, 6]]

• [[4, 5, 6]]

What is the result of the following code? import numpy as np arr = np.array([[1, 2, 3], [4, 5, 6]]) print(arr[1, :2])

• [4, 5]

• [2, 3]

• [1, 2]

• [4, 5, 6]

What is the result of the following code? import numpy as np arr = np.array([[1, 2, 3], [4, 5, 6]]) print(arr[:, ::-1])

• [[3, 2, 1], [6, 5, 4]]

• [[1, 2, 3], [4, 5, 6]]

• [[6, 5, 4], [3, 2, 1]]

• [[4, 5, 6], [1, 2, 3]]

What is the result of the following code? import numpy as np arr = np.array([[1, 2, 3], [4, 5, 6]]) print(arr[1, ::-1])

• [5, 6, 4]

• [6, 4, 5]

• [4, 5, 6]

• [6, 5, 4]