stats_variance

(PECL stats >= 1.0.0)

stats_variance — Returns the variance

Description

Returns the variance 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 a represents a sample of the population; defaults to FALSE.

Return Values

Returns the variance on success; FALSE on failure.

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https://secure.php.net/manual/en/function.stats-variance.php