IStatistics.NormsInv

Syntax

NormsInv(Probability: Double): Double;

Parameters

Probability. Probability corresponding to normal distribution. Tolerance range: [-1, 1].

Description

The NormsInv method returns the inverse value for standard normal distribution.

Comments

This distribution has the mean that is equal to zero, and the standard deviation that is equal to one.

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.NormsInv(0.945);
    If st.Status <> 0 Then
        Debug.WriteLine(st.Errors);
    Else
        Debug.WriteLine("Inverse normal distribution: " + d0.ToString);
    End If;
End Sub UserProc;

After you have executed this example the console window shows the inverse value for standard normal distribution:

Module execution started

Inverse normal distribution: 1.5981931399231093

Module execution finished