How to Calculate the Arithmetic Mean in Python

1. Use the Mathematical Formula to Calculate the Arithmetic Mean in Python
2. Use the numpy.mean() Function to Calculate the Arithmetic Mean in Python
3. Use the statistics.mean() Function to Calculate the Arithmetic Mean in Python
4. Use the scipy.mean() Function to Calculate the Arithmetic Mean in Python

The term arithmetic mean is the average of the numbers. The mathematical formula to determine the Arithmetic Mean is to divide the sum of the numbers by the count. It is determined in Python in the following ways.

• Use the mathematical formula.
• Use the mean() function from Python’s standard libraries like NumPy, statistics, scipy.

Use the Mathematical Formula to Calculate the Arithmetic Mean in Python

Follow this program to use the mathematical formula.

listnumbers = [1, 2, 4]
print("The mean is =", sum(listnumbers) / len(listnumbers))

Output:

The mean is = 2.3333333333333335

Use the numpy.mean() Function to Calculate the Arithmetic Mean in Python

The NumPy standard library contains the mean() function used to determine the Arithmetic Mean in Python. For this, import the NumPy library first. See the example below.

import numpy

listnumbers = [1, 2, 4]
print("The mean is =", numpy.mean(listnumbers))

Output:

The mean is = 2.3333333333333335

Use the statistics.mean() Function to Calculate the Arithmetic Mean in Python

The statistics library contains the mean() function used to determine the Arithmetic Mean. For this, import the statistics library first. Follow the example below.

import statistics

listnumbers = [1, 2, 4]
print("The mean is =", statistics.mean(listnumbers))

Output:

The mean is = 2.3333333333333335

Use the scipy.mean() Function to Calculate the Arithmetic Mean in Python

The scipy library contains the mean() function used to determine the mean. For this, import the scipy library first. Here’s an example.

import scipy

listnumbers = [1, 2, 4]
print("The mean is =", scipy.mean(listnumbers))

Output:

The mean is = 2.3333333333333335