trader_stddev
(PECL trader >= 0.2.0)
trader_stddev — Standard Deviation
Description
array trader_stddev
( array
$real
[, integer $timePeriod
[, float $nbDev
]] )
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.
0044 203 3971 555 (UK)