trader_stddev

(PECL trader >= 0.2.0)

trader_stddev — Standard Deviation

Description

trader_stddev ( array $real [, int $timePeriod [, float $nbDev ]] ) : array

Parameters

real

Array of real values.

timePeriod

Number of period. Valid range from 2 to 100000.

nbDev

Return Values

Returns an array with calculated data or false on failure.