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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

Использование операции уменьшения

Вы также можете вычислить среднее значение с помощью функции сокращения. Это будет переведено в простой код ниже:

from functools import reduce
 
if __name__ == '__main__':
 
    ints = [1, 2, 3, 4, 5]
 
    avg = reduce(lambda x, y: x + y, ints) / len(ints)
    print(avg)        # 3.0