StatisticFormula.Covariance Method (String, String)

.NET Framework (current version)
 

The covariance formula measures the degree of dependence that may exist between two random variables.

Namespace:   System.Web.UI.DataVisualization.Charting
Assembly:  System.Web.DataVisualization (in System.Web.DataVisualization.dll)

Public Function Covariance (
	firstInputSeriesName As String,
	secondInputSeriesName As String
) As Double

Parameters

firstInputSeriesName
Type: System.String

Name of the Series object that stores the first group's data.

secondInputSeriesName
Type: System.String

Name of the Series object that stores the second group's data.

Return Value

Type: System.Double

Covariance value between the two groups of data.

The method throws an exception if the input series do not have the same number of data points.

The following code demonstrates how to use this formula.

Dim result As double = Chart1.DataManipulator.Statistics.Covariance("Series1", "Series2")

.NET Framework
Available since 4.0
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