https://github.com/kaelzhang/s-deviation

Utility to calculate standard deviation.
https://github.com/kaelzhang/s-deviation

fintech math math-library standard-deviation

Last synced: 20 days ago
JSON representation

Utility to calculate standard deviation.

• Host: GitHub
• URL: https://github.com/kaelzhang/s-deviation
• Owner: kaelzhang
• License: other
• Created: 2015-12-15T07:50:54.000Z (about 9 years ago)
• Default Branch: master
• Last Pushed: 2021-03-02T03:16:37.000Z (almost 4 years ago)
• Last Synced: 2024-12-06T05:16:35.256Z (28 days ago)
• Topics: fintech, math, math-library, standard-deviation
• Language: JavaScript
• Size: 6.84 KB
• Stars: 2
• Watchers: 3
• Forks: 3
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Changelog: HISTORY.md
  • License: LICENSE-MIT

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README

        
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# WARNING

This module is lack of maintainance.

If you are familiar with python programming maybe you could check [**stock-pandas**](https://github.com/kaelzhang/stock-pandas) which provides powerful statistic indicators support, and is backed by [`numpy`](https://numpy.org/) and [`pandas`](https://pandas.pydata.org/).

The performance of [**stock-pandas**](https://github.com/kaelzhang/stock-pandas) is many times higher than JavaScript libraries, and can be directly used by machine learning programs.

****

# s-deviation

Math utility to calculate [standard deviations](https://en.wikipedia.org/wiki/Standard_deviation), especially for fintech.

## Install

```sh

$ npm install s-deviation

```

## Usage

```js

import sd from 's-deviation'

sd([1, 2, 4, 8], 2)         // [<1 empty item>, 0.5, 1, 2]

sd([1, 2, 3, 4, 5, 6], 4)

// [

//   <3 empty items>,

//   1.118033988749895,

//   1.118033988749895,

//   1.118033988749895

// ]

```

## sd(datum, size)

- **datum** `Array.` the collection of data

- **size** `Number` the sample size of

Returns `Array.` the array of standard deviations.

## Related Modules

- [bollinger-bands](https://www.npmjs.com/package/bollinger-bands): Fintach math utility to calculate bollinger bands.

- [s-deviation](https://www.npmjs.com/package/s-deviation): Math utility to calculate standard deviations.

- [moving-averages](https://www.npmjs.com/package/moving-averages): The complete collection of utility methods for [Moving average](https://en.wikipedia.org/wiki/Moving_average).

## License

MIT