Public Function ZTest( _
   ByVal hypothesizedMeanDifference As Double, _
   ByVal varianceFirstGroup As Double, _
   ByVal varianceSecondGroup As Double, _
   ByVal probability As Double, _
   ByVal firstInputSeriesName As String, _
   ByVal secondInputSeriesName As String _
) As ZTestResult

Visual Basic (Usage)

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Dim instance As Statistics Dim hypothesizedMeanDifference As Double Dim varianceFirstGroup As Double Dim varianceSecondGroup As Double Dim probability As Double Dim firstInputSeriesName As String Dim secondInputSeriesName As String Dim value As ZTestResult   value = instance.ZTest(hypothesizedMeanDifference, varianceFirstGroup, varianceSecondGroup, probability, firstInputSeriesName, secondInputSeriesName)

public ZTestResult ZTest( 
   double hypothesizedMeanDifference,
   double varianceFirstGroup,
   double varianceSecondGroup,
   double probability,
   string firstInputSeriesName,
   string secondInputSeriesName
)

Parameters

hypothesizedMeanDifference

The hypothesized difference between the means of the data groups.
Hypothesized Mean Difference

varianceFirstGroup

The variance within the first group of data.
Variance First Group

varianceSecondGroup

The variance within the second group of data.
Variance Second Group

probability

The alpha value (probability that the hypothesis is rejected).
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 performs a Z test for two groups of data, and returns the results using a ZTestResult object.

Two and only two groups of data must be specified. If either 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 ZTestResult 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