public static Nullable<float> StandardDeviationSample(
	this IEnumerable<Nullable<float>> source
)

<ExtensionAttribute>
Public Shared Function StandardDeviationSample ( 
	source As IEnumerable(Of Nullable(Of Single))
) As Nullable(Of Single)

[<ExtensionAttribute>]
static member StandardDeviationSample : 
        source : IEnumerable<Nullable<float32>> -> Nullable<float32>