@stdlib/stats-iter-meanabs2 NPM

itermeanabs2

Compute the arithmetic mean of squared absolute values for all iterated values.

The arithmetic mean of squared absolute values is defined as

Installation

npm install @stdlib/stats-iter-meanabs2

Usage

var itermeanabs2 = require( '@stdlib/stats-iter-meanabs2' );

itermeanabs2( iterator )

Computes the arithmetic mean of squared absolute values for all iterated values.

var array2iterator = require( '@stdlib/array-to-iterator' );

var arr = array2iterator( [ 1.0, -2.0, -3.0, 4.0 ] );

var m = itermeanabs2( arr );
// returns 7.5

Notes

If an iterated value is non-numeric (including NaN), the returned iterator returns NaN. If non-numeric iterated values are possible, you are advised to provide an iterator which type checks and handles non-numeric values accordingly.

Examples

var runif = require( '@stdlib/random-iter-uniform' );
var itermeanabs2 = require( '@stdlib/stats-iter-meanabs2' );

// Create an iterator for generating uniformly distributed pseudorandom numbers:
var rand = runif( -10.0, 10.0, {
    'seed': 1234,
    'iter': 100
});

// Compute the arithmetic mean of squared absolute values:
var m = itermeanabs2( rand );
// returns <number>

console.log( 'meanabs2: %d.', m );

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.