54 lines
1.4 KiB
JavaScript
54 lines
1.4 KiB
JavaScript
|
/**
|
||
|
|
* @license Apache-2.0
|
||
|
|
*
|
||
|
|
* Copyright (c) 2020 The Stdlib Authors.
|
||
|
|
*
|
||
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
* you may not use this file except in compliance with the License.
|
||
|
|
* You may obtain a copy of the License at
|
||
|
|
*
|
||
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
*
|
||
|
|
* Unless required by applicable law or agreed to in writing, software
|
||
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
* See the License for the specific language governing permissions and
|
||
|
|
* limitations under the License.
|
||
|
|
*/
|
||
|
|
|
||
|
|
'use strict';
|
||
|
|
|
||
|
|
// MODULES //
|
||
|
|
|
||
|
|
var dvarmpn = require( './../../../base/dvarmpn' );
|
||
|
|
|
||
|
|
|
||
|
|
// MAIN //
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Computes the variance of a double-precision floating-point strided array provided a known mean.
|
||
|
|
*
|
||
|
|
* @param {PositiveInteger} N - number of indexed elements
|
||
|
|
* @param {number} mean - mean
|
||
|
|
* @param {number} correction - degrees of freedom adjustment
|
||
|
|
* @param {Float64Array} x - input array
|
||
|
|
* @param {integer} stride - stride length
|
||
|
|
* @returns {number} variance
|
||
|
|
*
|
||
|
|
* @example
|
||
|
|
* var Float64Array = require( '@stdlib/array/float64' );
|
||
|
|
*
|
||
|
|
* var x = new Float64Array( [ 1.0, -2.0, 2.0 ] );
|
||
|
|
*
|
||
|
|
* var v = dvarm( x.length, 1.0/3.0, 1, x, 1 );
|
||
|
|
* // returns ~4.3333
|
||
|
|
*/
|
||
|
|
function dvarm( N, mean, correction, x, stride ) {
|
||
|
|
return dvarmpn( N, mean, correction, x, stride );
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
// EXPORTS //
|
||
|
|
|
||
|
|
module.exports = dvarm;
|