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  • Bug fixes for general core bugs in 4.0.x will end 8 May 2023 (12 months).
  • Bug fixes for security issues in 4.0.x will end 13 November 2023 (18 months).
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Differences Between: [Versions 400 and 401] [Versions 400 and 402] [Versions 400 and 403]

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Defines 1 class

StudentT:: (3 methods):
  distribution()
  inverse()
  calculateDistribution()


Class: StudentT  - X-Ref

distribution($value, $degrees, $tails)   X-Ref
TDIST.

Returns the probability of Student's T distribution.

return: float|string The result, or a string containing an error
param: mixed $value Float value for the distribution
param: mixed $degrees Integer value for degrees of freedom
param: mixed $tails Integer value for the number of tails (1 or 2)

inverse($probability, $degrees)   X-Ref
TINV.

Returns the one-tailed probability of the chi-squared distribution.

return: float|string The result, or a string containing an error
param: mixed $probability Float probability for the function
param: mixed $degrees Integer value for degrees of freedom

calculateDistribution(float $value, int $degrees, int $tails)   X-Ref

return: float