TDistribution Method

Measurement Studio 2012 for Visual Studio 2010 Help

Edition Date: August 2012

Part Number: 372636F-01

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Probability Class Example See Also


Note: This topic applies to the following Measurement Studio editions: Enterprise.

Calculates probability using a T distribution.

Namespace: NationalInstruments.Analysis.Math

Assembly: NationalInstruments.Analysis.Enterprise (in NationalInstruments.Analysis.Enterprise.dll) Version: 12.0.40.318

Syntax

Visual Basic (Declaration)
<SecurityPermissionAttribute(SecurityAction.Demand, Flags := SecurityPermissionFlag.UnmanagedCode)> _
Public Shared Function TDistribution ( _
	x As Double, _
	degreesOfFreedom As Integer _
) As Double

C#
[SecurityPermissionAttribute(SecurityAction.Demand, Flags = SecurityPermissionFlag.UnmanagedCode)]
public static double TDistribution(
	double x,
	int degreesOfFreedom
)

Parameters

x
Type: System.Double
The point to which the probability is calculated.
degreesOfFreedom
Type: System.Int32
Degrees of freedom of the distribution.

Return Value

The computed probability.

Exceptions

ExceptionCondition
ArgumentException degreesOfFreedom is less than or equal to zero.
DllNotFoundException The analysis library cannot be found.
EntryPointNotFoundException A required operation in the analysis library cannot be found.

Remarks

Computes the one-sided probability, p, of the t-distributed random variable, Tn, with the specified degreesOfFreedom

p = Prob{Tn x}

where T is t-distributed,
p is the probability,
n is degreesOfFreedom, and
x is the value.

Examples

The following example uses the TDistribution static method.
VB.NET
Dim x, p As Double
Dim degreesOfFreedom As Integer

x = 1.258
degreesOfFreedom = 6

p = Probability.TDistribution(x, degreesOfFreedom)
C#
double x, p;
int degreesOfFreedom;

x = 1.258;
degreesOfFreedom = 6;

p = Probability.TDistribution(x, degreesOfFreedom);

.NET Framework Security

See Also

Reference

Probability Class

NationalInstruments.Analysis.Math Namespace

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