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MongoQueryableStandardDeviationSampleAsync Method (IMongoQueryableNullableDouble, CancellationToken)

Computes the sample standard deviation of a sequence of values.

Namespace:  MongoDB.Driver.Linq
Assembly:  MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.9.0+32b058abcdf2c7e8d9dd3a676d207b31897eee2e
Syntax
public static Task<Nullable<double>> StandardDeviationSampleAsync(
	this IMongoQueryable<Nullable<double>> source,
	CancellationToken cancellationToken = null
)

Parameters

source
Type: MongoDB.Driver.LinqIMongoQueryableNullableDouble
A sequence of values to calculate the population standard deviation of.
cancellationToken (Optional)
Type: System.ThreadingCancellationToken
The cancellation token.

Return Value

Type: TaskNullableDouble
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 IMongoQueryableNullableDouble. 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