EDA Python - 16-2Numpy_random_and_masks

The video tutorial explains how to create and manipulate arrays using NumPy. It covers generating random arrays, performing arithmetic operations like addition and multiplication, and applying conditions to filter array elements. The tutorial also highlights the importance of understanding these operations for data manipulation in pandas.

What function is used to create a 5x5 array of random integers in NumPy?

• np.random.randint

• np.array.randint

• np.random.rand

• np.array.random

How can you add a third dimension to a NumPy array?

• By specifying three dimensions in the array creation

• By using the flatten function

• By stacking two arrays

• By using the reshape function

What is the result of adding a NumPy array to itself?

• Each element is doubled

• The array is transposed

• The array is flattened

• Each element is squared

Which operation will give the square root of each element in a NumPy array?

• array / 2

• np.square(array)

• array ** 0.5

• np.sqrt(array)

What does a Boolean mask in a NumPy array do?

• Sorts the array in ascending order

• Converts the array to a list

• Changes the data type of the array

• Selects elements based on a condition