RL NumPy Quiz 1

Which of the following are true about NumPy

• NumPy stands for Numerical Python

• Fast as compared to the python List

• Consumes less memory compared to python Lists

• NumPy is a part of Python Standard Library

In NumPy, with what datatype we work with ?

• np.ndarray

• array

• List

• numpy array

Which of the following are true about Dimensions of a NumPy array ?

• The depth of an array can be measured by the number of dimensions of an array

• A NumPy array can have any number of dimensions.

• The shape of the ndarray can be described by n attributes when dimension is n

• Dimension can be 0

A NumPy array is given in the picture. What is arr[1,2,1] + arr[0,1,2] - arr[1,1,1]

Hint: Answer is a three digit number

Import the NumPy library with the alias jkdf

How do I check the datatype of a NumPy array named arr?

• type(arr)

• arr.dtype

• arr.type()

• arr.dtype()

Which of the following are true?

• The shape of an array is the number of elements in each dimension

• In NumPy arrays we can store elements of different datatypes

• Complex Floats are supported by NumPy

• Given two 1-D arrays with characters, to find if the shorter array is a part of the larger array, we can take help of slicing

arr = np.array([-1,2,4,5,6,7,8], dtype=np.uint16)
print(arr)

• error because uint means unsigned integers, and we provided negative number

• [65535 2 4 5 6 7 8]

• [1 2 4 5 6 7 8]

• [-1 2 4 5 6 7 8]

from numpy import random
x = random.rand()

x will be between

• 0 and 1

• -1 to 1

• any positive int

• any postive or negative int

Which of the parameters are used to characterize a the Probability Distribution of Normal Distribution

• mean

• standard deviation

• median

• inter quartile range