MathPHP\Statistics\Descriptive::range PHP Method

Descriptive Class Documentation ファイルを表示 Open project: markrogoyski/math-php

range() public static method

It provides an indication of statistical dispersion. (https://en.wikipedia.org/wiki/Range_(statistics)) R = max x - min x
public static range ( array $numbers ) : number
$numbers array
return number 
    public static function range(array $numbers)
    {
        if (empty($numbers)) {
            return null;
        }
        return max($numbers) - min($numbers);
    }
Descriptive
IQR
coefficientOfVariation
describe
fiveNumberSummary
interquartileRange
meanAbsoluteDeviation
medianAbsoluteDeviation
midhinge
midrange
percentile
populationVariance
quartiles
quartilesExclusive
quartilesInclusive
range
sampleVariance
sd
standardDeviation
variance