ArcGIS Developer Help

IStatisticsResults.StandardDeviation Property

The standard deviation, based on sample flag.

[Visual Basic .NET]
Public ReadOnly Property StandardDeviation As Double

[C#]
public double StandardDeviation {get;}

[C++]
HRESULT get_StandardDeviation(
  System.Double* stdDev
);

[C++]
Parameters
stdDev [out, retval]

  stdDev is a parameter of type double*

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Returns the StandardDeviation of all the data values in the BaseStatistics.

If your data is a sample of the real data, you should indicate so with IGenerateStatistics::Sample before calling StandardDeviation.

By default it returns the Sample Standard Deviation.