trader_stddev
(PECL trader >= 0.2.0)
trader_stddev — Standard Deviation
Beschreibung
$real, int $timePeriod = ?, float $nbDev = ?): array
Parameter-Liste
-
real -
Array of real values.
-
timePeriod -
Number of period. Valid range from 2 to 100000.
-
nbDev -
Rückgabewerte
Returns an array with calculated data or false on failure.

