standard deviation
Synopsis
Calculates the standard deviation of values in a specified column of the search query results.
Syntax
stdev [COLUMN_NAME]
Required Arguments
COLUMN_NAME
Syntax:Â <character string>
Description:Â The name of a column header that has numeric values
Optional Arguments
None
Description
Shows how much variation or dispersion from the average exists calculated on values from a specific log column. A low standard deviation indicates that the data points tend to be very close to the mean (also called expected value); a high standard deviation indicates that the data points are spread out over a large range of values.
Examples
Example 1:Â Â
* in log.access | stdev Bytes-SentÂ
Calculates the standard deviation of the values under the column Bytes-Sent in the access log