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/lib/phpspreadsheet/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Calculation/Statistical/Distributions/ -> Poisson.php (source)

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Defines 1 class

Poisson:: (1 method):
  distribution()


Class: Poisson  - X-Ref

distribution($value, $mean, $cumulative)   X-Ref
POISSON.

Returns the Poisson distribution. A common application of the Poisson distribution
is predicting the number of events over a specific time, such as the number of
cars arriving at a toll plaza in 1 minute.

param: mixed $value Float value for which we want the probability
param: mixed $mean Mean value as a float
param: mixed $cumulative Boolean value indicating if we want the cdf (true) or the pdf (false)
return: array|float|string The result, or a string containing an error