trader_stddev

(PECL trader >= 0.2.0)

trader_stddevStandard Deviation

説明

trader_stddev(array$real, int$timePeriod = ?, float$nbDev = ?): array

パラメータ

real

実数値の配列。

timePeriod

Number of period. Valid range from 2 to 100000.

nbDev

返り値

Returns an array with calculated data or false on failure.