Phpml\Math\Statistic\Variance Class Reference

Static Public Member Functions
static	population (array $population)
	Population variance Use when all possible observations of the system are present.

Member Function Documentation

population()

static Phpml\Math\Statistic\Variance::population ( array $population )

static

Population variance Use when all possible observations of the system are present.

If used with a subset of data (sample variance), it will be a biased variance.

 ∑⟮xᵢ - μ⟯²

σ² = -------— N

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The documentation for this class was generated from the following file:

• lib/mlbackend/php/phpml/src/Phpml/Math/Statistic/Variance.php