Gemstone Numeric Library
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# NumericAnalysisExtensionsStandardDeviation(IEnumerableDecimal, Boolean) Method

Computes the standard deviation over a sequence of Decimal values.

## Definition

Namespace: Gemstone.Numeric.Analysis
Assembly: Gemstone.Numeric (in Gemstone.Numeric.dll) Version: 1.0.155 -- Release Build+14e668e89bf63996b2c099f01228657e2e279d75
C#
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    public static decimal StandardDeviation(
    	this IEnumerable<decimal> source,
    	bool calculateForSample = false
    )

VB
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    <ExtensionAttribute>
    Public Shared Function StandardDeviation (
    	source As IEnumerable(Of Decimal),
    	Optional calculateForSample As Boolean = false
    ) As Decimal

C++
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    public:
    [ExtensionAttribute]
    static Decimal StandardDeviation(
    	IEnumerable<Decimal>^ source,
    	bool calculateForSample = false
    )

JavaScript
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    Gemstone.Numeric.Analysis.NumericAnalysisExtensions.StandardDeviation = function(source, calculateForSample);

#### Parameters

source IEnumerableDecimal
  Source data sample.
calculateForSample Boolean (Optional)
  Set to true to calculate for estimated population size, or false for full population.

#### Return Value

Decimal
The standard deviation of the sequence.

#### Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IEnumerableDecimal. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

## Exceptions

ArgumentNullException | source is null.
ArgumentOutOfRangeException | source does not contain enough values to produce a result.

## See Also

#### Reference

NumericAnalysisExtensions Class
StandardDeviation Overload
Gemstone.Numeric.Analysis Namespace