Probabilities.LogisticCDF Function

Logistic cumulative distribution function (CDF).

Pascal

function LogisticCDF(x: double; m: double; b: double): double; overload;

Parameters	Description
x	Function domain, real value.
m	Distribution location parameter, real value.
b	Distribution scale parameter, real positive value.

Returns

the logistic cumulative distribution function (CDF) for value x using the parameters m and b. Both parameters must be positive, otherwise the result is NAN.

Description

function LogisticPDF(x : single; m, b: single) : single; overload;

The logistic cumulative distribution function is defined by the following equation:

The result of LogisticCDF is the probability that a single observation from a logistic distribution with parameters m and b will fall in the interval [-infinity,x].