stats_variance
(PECL stats >= 1.0.0)
stats_variance — Returns the variance
Beschreibung
$a
, bool $sample
= false
): float
Returns the variance of the values in a
.
Parameter-Liste
-
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
a
represents a sample of the population; defaults tofalse
.
Rückgabewerte
Returns the variance on success; false
on failure.