QueryableExtensionMethodsVarianceAsyncTSource, TColumnType Method (IQueryableTSource, ExpressionFuncTSource, TColumnType)

public static Task<double> VarianceAsync<TSource, TColumnType>(
	this IQueryable<TSource> source,
	Expression<Func<TSource, TColumnType>> selector
)

<ExtensionAttribute>
Public Shared Function VarianceAsync(Of TSource, TColumnType) ( 
	source As IQueryable(Of TSource),
	selector As Expression(Of Func(Of TSource, TColumnType))
) As Task(Of Double)