stats_standard_deviation
(PECL stats >= 1.0.0)
stats_standard_deviation — Returns the standard deviation
Description
$a
[, bool $sample = FALSE
] ) : float
Returns the standard deviation of the values in a.
Parameters
-
a -
The array of data to find the standard deviation for. Note that all values of the array will be cast to float.
-
sample -
Indicates if
arepresents a sample of the population; defaults toFALSE.
English translation
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Document created the 30/01/2003, last modified the 26/10/2018
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