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MongoQueryable.StandardDeviationSampleAsync<TSource> Method (IMongoQueryable<TSource>, Expression<Func<TSource, Decimal>>, CancellationToken)

Computes the sample standard deviation of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.

Namespace:  MongoDB.Driver.Linq
Assembly:  MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.19.1+3a2a09dd959482f665ffbb5df2557ec541597af4
Syntax
public static Task<decimal> StandardDeviationSampleAsync<TSource>(
	this IMongoQueryable<TSource> source,
	Expression<Func<TSource, decimal>> selector,
	CancellationToken cancellationToken = default
)

Parameters

source
Type: MongoDB.Driver.Linq.IMongoQueryable<TSource>
A sequence of values to calculate the population standard deviation of.
selector
Type: System.Linq.Expressions.Expression<Func<TSource, Decimal>>
A transform function to apply to each element.
cancellationToken (Optional)
Type: System.Threading.CancellationToken
The cancellation token.

Type Parameters

TSource
The type of the elements of source.

Return Value

Type: Task<Decimal>
The population standard deviation of the sequence of values.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IMongoQueryable<TSource>. 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).
See Also