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  • Bug fixes for general core bugs in 3.9.x will end* 10 May 2021 (12 months).
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/lib/mlbackend/php/phpml/src/Phpml/Math/Statistic/ -> StandardDeviation.php (source)

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Differences Between: [Versions 39 and 400] [Versions 39 and 401] [Versions 39 and 402] [Versions 39 and 403]

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Defines 1 class

StandardDeviation:: (2 methods):
  population()
  sumOfSquares()


Class: StandardDeviation  - X-Ref

population(array $numbers, bool $sample = true)   X-Ref

param: float[]|int[] $numbers

sumOfSquares(array $numbers)   X-Ref
Sum of squares deviations
∑⟮xᵢ - μ⟯²

param: float[]|int[] $numbers