trader_stddev
Standard Deviation
説明
array trader_stddev(array $real, int $timePeriod = ?, float $nbDev = ?)
パラメータ
-
real
-
実数値の配列。
-
timePeriod
-
Number of period. Valid range from 2 to 100000.
-
nbDev
-
戻り値
Returns an array with calculated data or false on failure.