0.2.2 • Published 12 months ago

@stdlib/stats-base-dists-uniform v0.2.2

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License
Apache-2.0
Repository
github
Last release
12 months ago

Continuous Uniform

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Continuous uniform distribution.

Installation

npm install @stdlib/stats-base-dists-uniform

Usage

var uniform = require( '@stdlib/stats-base-dists-uniform' );

uniform

Continuous uniform distribution.

var dist = uniform;
// returns {...}

The namespace contains the following distribution functions:

The namespace contains the following functions for calculating distribution properties:

The namespace contains a constructor function for creating a continuous uniform distribution object.

var Uniform = require( '@stdlib/stats-base-dists-uniform' ).Uniform;

var dist = new Uniform( 2.0, 4.0 );

var y = dist.cdf( 2.5 );
// returns 0.25

Examples

var uniform = require( '@stdlib/stats-base-dists-uniform' );

/*
Let's consider an example where we are modeling the arrival times of guests
at a reception event that runs from 6:00 PM to 8:00 PM, where each arrival
within this 2-hour window is equally likely. We can model this scenario using a
continuous  uniform distribution with a minimum value of 0 (6:00 PM) and
a maximum value of 120 (8:00 PM).
*/

var min = 0.0; // 6:00 PM is 0 minutes after 6:00 PM.
var max = 120.0; // 8:00 PM is 120 minutes after 6:00 PM.

var mean = uniform.mean( min, max );
// returns 60.0

var variance = uniform.variance( min, max );
// returns 1200.0

var stdDev = uniform.stdev( min, max );
// returns ~34.641

var entropy = uniform.entropy( min, max );
// returns ~4.787

// Probability of arrival within 30 minutes after 6:00 PM:
var p = uniform.cdf( 30, min, max );
// returns 0.25

// Evaluate the PDF at 30 minutes after 6:00 PM:
var pdf = uniform.pdf( 30, min, max );
// returns ~0.0083

Notice

This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.

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License

See LICENSE.

Copyright

Copyright © 2016-2024. The Stdlib Authors.