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Revision as of 03:34, 11 November 2009 by Chris Burke
dev (standard deviation function)
Computes the standard deviation of a list (as the square root of the variance).
dev applies to all numeric data types and throws an error with temporal types, char and sym.
q)dev 10 343 232 55 134.3484 q)select dev price by sym from trade
For a complete list of functions, see the kdb+ Function Reference.