# php-statistics

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Statistics library for PHP.

## Requirements

* PHP 5.3.10 or greater.

## Usage

### Sum
```
Statistics::sum(array(1, 2, 3));
```

### Minimum
```
Statistics::min(array(1, 2, 3));
```

### Maximum
```
Statistics::max(array(1, 2, 3));
```

### Mean
```
Statistics::mean(array(1, 2, 3));
```

### Frequency
```
Statistics::frequency(array(1, 2, 3, 3, 3));
```

### Mode
```
Statistics::mode(array(1, 2, 2, 3));
```

### Variance (sample and population)
```
Statistics::variance(array(1, 2, 3));
Statistics::variance(array(1, 2, 3), false);
```

### Standard deviation (sample and population)
```
Statistics::standardDeviation(array(1, 2, 3));
Statistics::standardDeviation(array(1, 2, 3), false);
```

### Range
```
Statistics::range(array(4, 6, 10, 15, 18));
```