Calculates the standard deviation for a field over a set of events. Result is returned in field named _stddev
| Name | Type | Required | Default | Description |
|---|---|---|---|---|
| field | string | Yes | field to extract a number from and calculate standard deviation over | |
| as | string | No | _stddev | name of output field |
field is the unnamed parameter.
Find the standard deviation of bytes send in http responses
stdDevBytes := stdDev(field=bytes_sent)