magaras/pstats

Library that contains statistical methods.

pStats

, _(*1)

A PHP library containing a lot of statistical methods, from the most usefull ones (like mean and variance) to even some more sophisticated, like moving average and outliers around median., _(*2)

I intend to keep updating this library in order for it to be as thorough as possible., _(*3)

Install with composer composer require magaras/pstats., _(*4)

The library supports the following methods:

Mean, _(*5)

Basic::mean($data);

** Median**, _(*6)

Basic::median($data);

Mode, _(*7)

Basic::mode($data);

Range, _(*8)

Basic::range($data);

Percentage Change, _(*9)

Basic::percentageChange($start_value, $end_value);

Percentage Difference, _(*10)

Basic::percentageDifference($start_value, $end_value);

Absolute Error, _(*11)

Error::absoluteError(0, 0);

Mean Absolute Error, _(*12)

Error::mae($actuals, $predictions);

Mean Square Error, _(*13)

Error::mse($actuals, $predictions);

Variance (population / sample), _(*14)

Error::variance($data, true);
Error::variance($data, false);

Std, _(*15)

Error::std($data);

Absolute / Relative / Cumulative Frequency for continuous values, _(*16)

$frequency_classes = Frequency::frequencyContinuous($data);

$frequency_classes[$i]->absolute_frequency

$frequency_classes[$i]->relative_frequency

$frequency_classes[$i]->cumulative_frequency

Absolute / Relative / Cumulative Frequency for discrete values, _(*17)

$frequency_classes = Frequency::frequencyDiscrete($data);

$frequency_classes[$i]->absolute_frequency

$frequency_classes[$i]->relative_frequency

$frequency_classes[$i]->cumulative_frequency

Simple Moving Average, _(*18)

MovingAverage::simpleMovingAverage($moving_average_value, $data);

Exponential Moving Average, _(*19)

MovingAverage::exponentialMovingAverage(moving_average_value, $data);

Outliers Around Mean, _(*20)

Outliers::outlierAroundMean($data);

Outliers Around Median, _(*21)

Outliers::outlierAroundMedian($data);