nanmeanors

Calculate the arithmetic mean of an array, ignoring NaN values and using ordinary recursive summation.

Installation

npm install @stdlib/stats-array-nanmeanors

Usage

var nanmeanors = require( '@stdlib/stats-array-nanmeanors' );

nanmeanors( x )

Computes the arithmetic mean of an array, ignoring NaN values and using ordinary recursive summation.

var x = [ 1.0, -2.0, NaN, 2.0 ];

var v = nanmeanors( x );
// returns ~0.3333

The function has the following parameters:

• x: input array.

Notes

• If provided an empty array, the function returns NaN.
• The function supports array-like objects having getter and setter accessors for array element access (e.g., @stdlib/array-base/accessor).

Examples

var uniform = require( '@stdlib/random-base-uniform' );
var bernoulli = require( '@stdlib/random-base-bernoulli' );
var filledarrayBy = require( '@stdlib/array-filled-by' );
var nanmeanors = require( '@stdlib/stats-array-nanmeanors' );

function rand() {
    if ( bernoulli( 0.8 ) < 1 ) {
        return NaN;
    }
    return uniform( -50.0, 50.0 );
}

var x = filledarrayBy( 10, 'float64', rand );
console.log( x );

var v = nanmeanors( x );
console.log( v );

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.

Community

License

See LICENSE.

Copyright

Copyright © 2016-2026. The Stdlib Authors.