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Request #24064 requested: std (standard deviation)
Submitted: 2003-06-06 13:48 UTC Modified: 2007-03-06 10:32 UTC
From: tularis@php.net Assigned:
Status: Closed Package: Feature/Change Request
PHP Version: 5CVS-2003-06-06 (dev) OS: all
Private report: No CVE-ID: None
View Developer Edit
 [2003-06-06 13:48 UTC] tularis@php.net 
I request that a function to get the standard deviation of an array be added to php5 (since none will be added to php4 anyway).

- Tularis

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 [2005-05-02 11:18 UTC] andrey@php.net 
math_std_dev() will be available in 5.1.0
 [2007-03-06 10:32 UTC] andrey@php.net 
It was added and moved to pecl/stats, which is also compatible with PHP4, so one can have the function with PHP4 and PHP5. Very easy to install, and there is a windows extension dll available through pecl.php.net
 
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