MathPHP\Statistics\Descriptive::populationVariance PHP 메소드

Descriptive 1 문서 파일 보기 프로젝트 열기: markrogoyski/math-php

populationVariance() 공개 정적인 메소드

If used with a subset of data (sample variance), it will be a biased variance. ∑⟮xᵢ - μ⟯² σ² = ---------- N μ is the population mean N is the number of numbers in the population set
public static populationVariance ( array $numbers ) : numeric
$numbers array
리턴 numeric 
    public static function populationVariance(array $numbers)
    {
        $N = count($numbers);
        return self::variance($numbers, $N);
    }
Descriptive
IQR
coefficientOfVariation
describe
fiveNumberSummary
interquartileRange
meanAbsoluteDeviation
medianAbsoluteDeviation
midhinge
midrange
percentile
populationVariance
quartiles
quartilesExclusive
quartilesInclusive
range
sampleVariance
sd
standardDeviation
variance