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iterstdev
Compute the corrected sample standard deviation over all iterated values.
The corrected sample standard deviation is defined as
Installation
npm install @stdlib/stats-iter-stdevUsage
var iterstdev = require( '@stdlib/stats-iter-stdev' );iterstdev( iterator[, mean] )
Computes the corrected sample standard deviation over all iterated values.
var array2iterator = require( '@stdlib/array-to-iterator' );
var arr = array2iterator( [ 2.0, 1.0, 3.0 ] );
var s = iterstdev( arr );
// returns 1.0If the mean is already known, provide a mean argument.
var array2iterator = require( '@stdlib/array-to-iterator' );
var arr = array2iterator( [ 2.0, 1.0, 3.0 ] );
var s = iterstdev( arr, 2.0 );
// returns ~0.82Notes
Examples
var runif = require( '@stdlib/random-iter-uniform' );
var iterstdev = require( '@stdlib/stats-iter-stdev' );
// Create an iterator for generating uniformly distributed pseudorandom numbers:
var rand = runif( -10.0, 10.0, {
'seed': 1234,
'iter': 100
});
// Compute the corrected sample standard deviation:
var s = iterstdev( rand );
// returns <number>
console.log( 'stdev: %d.', s );See Also
-
@stdlib/stats-iter/mean: compute the arithmetic mean over all iterated values. -
@stdlib/stats-iter/variance: compute the unbiased sample variance over all iterated values.
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 © 2016-2024. The Stdlib Authors.