https://github.com/lukem512/anova

Analysis of Variance (ANOVA)
https://github.com/lukem512/anova

analysis anova degrees-of-freedom f-value mean-squared statistics sum-of-squares variance

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Analysis of Variance (ANOVA)

• Host: GitHub
• URL: https://github.com/lukem512/anova
• Owner: lukem512
• Created: 2016-04-14T16:00:14.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2017-07-31T11:43:58.000Z (over 7 years ago)
• Last Synced: 2024-11-06T18:08:35.854Z (14 days ago)
• Topics: analysis, anova, degrees-of-freedom, f-value, mean-squared, statistics, sum-of-squares, variance
• Language: JavaScript
• Homepage: https://www.npmjs.com/package/anova
• Size: 5.86 KB
• Stars: 11
• Watchers: 3
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# ANOVA

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An NPM module providing the *Analysis of Variance* (ANOVA) parametric statistical test. When performing ANOVA, individual observations (values) are grouped into treatments (samples, arrays of values). The analysis is performed on an array of treatments and results in an F-value. Additional values, such as the Sum of Squares, can be computed using the functions described below.

To use it, simply [install via NPM](https://www.npmjs.com/package/anova/tutorial) and include it in your project file.

```js

var anova = require('anova');

```

To compute the F-test of an array of samples use the `test` function:

```js

var samples = [[3,3,5,1], [1,2,3]];

console.log(anova.test(samples)); // 0.8571428571428572

```

To compute the Sum of Squares use the `SS` function:

```js

var ss = anova.SS(samples);

console.log('The between treatments SS is:', ss.treatments);

console.log('The error or residual SS is:', ss.residual);

console.log('The total SS is:', ss.total);

```

To compute the Degrees of Freedom use the `DF` function:

```js

var df = anova.DF(samples);

console.log('The between treatments DF is:', df.treatments);

console.log('The error or residual DF is:', df.residual);

console.log('The total DF is:', df.total);

```

To compute the Mean Squared use the `MS` function:

```js

var ms = anova.MS(samples);

console.log('The between treatments MS is:', ms.treatments);

console.log('The error or residual MS is:', ms.residual);

```

### Related Modules

- [brown-forsythe-test](https://github.com/lukem512/brown-forsythe-test)

- [levene-test](https://github.com/lukem512/levene-test)

- [mann-whitney-utest](https://github.com/lukem512/mann-whitney-utest)

- [statistical-methods](https://github.com/lukem512/statistical-methods)

### License

MIT © Luke Mitchell