note 93199 added to function.stats-standard-deviation

The above deviation formula is incorrect. Here's a fixed version. function deviation ($array){ $avg = average($array); $variance=0; foreach ($array as $value) { $variance+=pow($value-$avg, 2); } $deviation = sqrt($variance/(count($array)-1)); return $deviation; } ---- Server IP: 64.71.164.2 Probable Submitter: 24.63.231.253 ---- Manual Page -- http://www.php.net/manual/en/function.stats-standard-deviation.php Edit -- https://master.php.net/note/edit/93199 Del: integrated -- https://master.php.net/note/delete/93199/integrated Del: useless -- https://master.php.net/note/delete/93199/useless Del: bad code -- https://master.php.net/note/delete/93199/bad+code Del: spam -- https://master.php.net/note/delete/93199/spam Del: non-english -- https://master.php.net/note/delete/93199/non-english Del: in docs -- https://master.php.net/note/delete/93199/in+docs Del: other reasons-- https://master.php.net/note/delete/93199 Reject -- https://master.php.net/note/reject/93199 Search -- https://master.php.net/manage/user-notes.php