Skip to main content

Documentation Index

Fetch the complete documentation index at: https://docs.activeviam.com/llms.txt

Use this file to discover all available pages before exploring further.

​
atoti.stats.normal.ppf(point, /, *, mean, standard_deviation)

Percent point function for a normal distribution.
This feature is experimental, its key is "stats.normal.ppf".
Also called inverse cumulative distribution function. The ppf is given by the formula ppf⁡(x)=μ+σ2erf⁡−1(2x−1)\operatorname {{ppf}}(x) = \mu + \sigma \sqrt{{2}} \operatorname {{erf}} ^{{-1}}(2x-1) Where μ\mu is the mean of the distribution, σ\sigma is its standard deviation and erf⁡−1\operatorname {{erf}}^{{-1}} the inverse of the error function.
  • Parameters:
    • point (VariableMeasureConvertible) – The point where the function is evaluated.
    • mean (NumericMeasureConvertible) – The mean value of the distribution.
    • standard_deviation (StrictlyPositiveNumber | VariableMeasureConvertible) – The standard deviation of the distribution. Must be positive.
  • Return type: MeasureDefinition
See also: Quantile function of a normal distribution.