How to calculate the arithmetic mean in python

To calculate the arithmetic mean in Python, you can use the mean () function of the numpy library.

mean(x)

The x parameter of the function is a list of numeric values or an array containing the values.

The mean() function calculates and returns the arithmetic mean of the distribution.

$$ μ = \frac{ \sum_{i=1}^{n} x_i } {n} $$

Examples

Example 1

from numpy import mean
a=[1,2,3,4,5]
mean(a)

3.0

Example 2

from numpy import mean
mean([1,2,3])

2.0

Example 3

from numpy import mean, array
v=array([1,2,3,4])
mean(v)

2.5