How do you calculate the Python mean of the list?

General Discussions
1

How do you calculate the Python mean of the list?

For example, given the list:

[1, 2, 3, 4]

The arithmetic mean should be:

2.5

What is the best way to compute the Python mean of a list?

2

The statistics module in Python provides a built-in function mean() to compute the arithmetic mean of a list.

import statistics

numbers = [1, 2, 3, 4] mean = statistics.mean(numbers) print(mean) # Output: 2.5

3

You can manually calculate the mean by dividing the sum of the list elements by the number of elements.

numbers = [1, 2, 3, 4]
mean = sum(numbers) / len(numbers)
print(mean)  # Output: 2.5
4

The numpy library offers a highly efficient mean() function for large datasets.

import numpy as np

numbers = [1, 2, 3, 4]
mean = np.mean(numbers)
print(mean)  # Output: 2.5