Python - Statistics Module

The statistics module provides functions to mathematical statistics of numeric data. The following popular statistical functions are defined in this module.

Mean

The mean() method calculates the arithmetic mean of the numbers in a list.

Example: Statistics Module

import statistics

print(statistics.mean([2,5,6,9]))  #output: 5.5

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Median

The median() method returns the middle value of numeric data in a list.

Example: Statistics Module

import statistics

print(statistics.median([1,2,3,8,9]))  #output: 3
print(statistics.median([1,2,3,7,8,9]) )  #output: 5.0

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Mode

The mode() method returns the most common data point in the list.

Example: Statistics Module

import statistics

print(statistics.mode([2,5,3,2,8,3,9,4,2,5,6]))  #output: 2

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Standard Deviation

The stdev() method calculates the standard deviation on a given sample in the form of a list.

Example: Statistics Module

import statistics

print(statistics.stdev([1,1.5,2,2.5,3,3.5,4,4.5,5]))  #output: 1.3693063937629153

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Learn about the statistics module in Python docs.