Public Function FTest( _
   ByVal probability As Double, _
   ByVal firstInputSeriesName As String, _
   ByVal secondInputSeriesName As String _
) As FTestResult

Visual Basic (Usage)	Copy Code
Dim instance As Statistics Dim probability As Double Dim firstInputSeriesName As String Dim secondInputSeriesName As String Dim value As FTestResult   value = instance.FTest(probability, firstInputSeriesName, secondInputSeriesName)

public FTestResult FTest( 
   double probability,
   string firstInputSeriesName,
   string secondInputSeriesName
)

Parameters

probability

The alpha value (probability that the hypothesis is rejected). Allowable range is 0-1.
Probability

firstInputSeriesName

The name of the series that stores the first group of data. Data must be stored in the first Y-values of the series' data points.
First Input Series Name

secondInputSeriesName

The name of the series  that stores the second group of data. Data must be stored in the first Y-values of the series' data points.
Second Input Series Name

Return Value

This method returns the results of the F-test using an FTestResult object.

FTest performs a two-sample F-test to compare two population variances. For example, it can be used to determine whether the time scores in a swimming meet have a difference in variance for samples from two teams.

If a specified input series does not exist in the series collection at the time of the method call than an exception will be thrown.

The following is a brief description of the FTestResult class members:

Target Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, Windows Vista, Windows Server 2008 family

Reference