stddev() function

*Function type: Aggregate
**Output data type:* Float

The column on which to operate. Defaults to "_value".

mode

The standard deviation mode or type of standard deviation to calculate. Defaults to "sample".

*Data type: String*

sample

Calculates the sample standard deviation where the data is considered to be part of a larger population.

population

Calculates the population standard deviation where the data is considered a population of its own.

Examples

  |> range(start: -5m)
    r._field == "usage_system"
  )

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