Python – Random Number using Normal Distribution

Contents

Python – Generate Random Float using Normal distribution

To generate a random floating point number using Normal distribution in Python, use normalvariate() function of Python random package.

In this tutorial, we shall learn how to generate a random floating point number based on Normal distribution with specified mean and standard deviation.

Syntax of random.normalvariate()

Following is the syntax of normalvariate() function in random module.

``f = random.normalvariate(mu, sigma)``

where

normalvariate() function returns a random floating point value based on the given mean and standard deviation for the Normal distribution.

Examples

1. Generate a float value using normal distribution

In this example, we shall use random.normalvariate() function to generate a random floating point number based on the Normal distribution with mean of 2 and standard deviation of 0.5.

Python Program

``````import random

mu = 2
sigma = 0.5
randomnumber = random.normalvariate(mu, sigma)
print(randomnumber)``````
Run Code Copy

Output

``2.3033833601115106``

2. Generate a float value using normal distribution with a standard deviation of 1

In this example, we shall use random.normalvariate() function to generate a random floating point number based on a Normal distribution with mean of 0 and standard deviation of 0.1.

Python Program

``````import random

mu = 0
sigma = 0.1
randomnumber = random.normalvariate(mu, sigma)
print(randomnumber)``````
Run Code Copy

Output

``0.10676590503788591``

Summary

In this tutorial of Python Examples, we learned how to generate a random floating point number using Normal distribution, with the help of well detailed example programs.

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