Edit
In Place Editing Advanced Editing

stats_standard_deviation

(PECL stats >= 1.0.0)
Returns the standard deviation
float stats_standard_deviation ( array $a [, bool $sample = false ] )
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.

Returns:

Returns the standard deviation on success; FALSE on failure.

Exception:

Raises an E_WARNING when there are fewer than 2 values in a.

doc_php
doc_php
2016-02-24 16:02:39
Comments
Leave a Comment

Please login to continue.