@stdlib/stats/base/dists/degenerate/mean/README.md

Standard library statistical functions.

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# Mean

> [Degenerate][degenerate-distribution] distribution [expected value][expected-value].

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The [expected value][expected-value] for a [degenerate][degenerate-distribution] random variable is

<!-- <equation class="equation" label="eq:degenerate_expectation" align="center" raw="\mathbb{E}\left[ X \right] = \mu" alt="Expected value for a degenerate distribution."> -->

<div class="equation" align="center" data-raw-text="\mathbb{E}\left[ X \right] = \mu" data-equation="eq:degenerate_expectation">
    <img src="https://cdn.jsdelivr.net/gh/stdlib-js/stdlib@e1fbdee688c5409e4cc6b0cd06d90b1cd2abd67c/lib/node_modules/@stdlib/stats/base/dists/degenerate/mean/docs/img/equation_degenerate_expectation.svg" alt="Expected value for a degenerate distribution.">
    <br>
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where `μ` is the constant value of the distribution.

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## Usage

```javascript
var mean = require( '@stdlib/stats/base/dists/degenerate/mean' );
```

#### mean( mu )

Returns the [expected value][expected-value] of a [degenerate][degenerate-distribution] distribution with constant value `mu`.

```javascript
var v = mean( 10.0 );
// returns 10.0

v = mean( -0.5 );
// returns -0.5
```

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</section>

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## Examples

<!-- eslint no-undef: "error" -->

```javascript
var randu = require( '@stdlib/random/base/randu' );
var mean = require( '@stdlib/stats/base/dists/degenerate/mean' );

var mu;
var v;
var i;

for ( i = 0; i < 10; i++ ) {
    mu = randu();
    v = mean( mu );
    console.log( 'µ: %d, E(X;µ): %d', mu.toFixed( 4 ), v.toFixed( 4 ) );
}
```

</section>

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</section>

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[degenerate-distribution]: https://en.wikipedia.org/wiki/Degenerate_distribution

[expected-value]: https://en.wikipedia.org/wiki/Expected_value

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