IStatistics.FInv

Syntax

FInv(Probability: Double; DegreesOfFreedom1: Integer; DegreesOfFreedom2: Integer): Double;

Parameters

Probability. Probability value for which you calculate inverse distribution function. Available values are taken from the range [0, 1].

DegreesOfFreedom1. First number of degrees of freedom. Tolerance range: [1, 10^10).

DegreesOfFreedom2. Second number of degrees of freedom. Tolerance range: [1, 1010).

Description

The FInv method returns the inverse value for F-distribution of probabilities.

If Probability = FDist(Value ;…), then FInv(Probability ;…) = Value.

Example

To execute the example, add a link to the Stat system assembly.

Sub UserProc;
Var
    st: Statistics;
    d0: Double;
Begin
    st := New Statistics.Create;
    d0 := st.FInv(0.00936, 6, 4);
    If st.Status <> 0 Then
        Debug.WriteLine(st.Errors);
    Else
        Debug.WriteLine("Inverse: " + d0.ToString);
    End If;
End Sub UserProc;

Executing the example shows the inverse value for probability F-distribution in the console window:

Module execution started

Inverse: 15.756332252513578

Module execution finished