http://pear.php.net/ pear-webmaster@lists.php.net pear-webmaster@lists.php.net en-us The latest releases for the package math_stats http://pear.php.net/package/Math_Stats/download/0.9.1/ QA release<br /> Bug #17924 frequency and test suite broken 2010-10-04T13:11:33-05:00 http://pear.php.net/package/Math_Stats/download/0.9.0/ QA release<br /> Updated svn structure<br /> Unit tests updated to phpunit 3.4<br /> Bug #3315 frequency() generates notices<br /> Bug #6252 Calculation of frequency gives an E_NOTICE<br /> Bug #12465 Median formula incorrect 2010-10-02T18:01:04-05:00 http://pear.php.net/package/Math_Stats/download/0.9.0beta3/ Modified the productN() method to try and avoid numeric overflow, and in case<br /> there is overflow to return an array of values to be multiplied, instead of<br /> a single resulting value. <br /> <br /> Changed also the geometricMean() method to work with the new productN() and<br /> product() methods. Unit tests have been unaffected by the change. 2003-06-12T11:46:00-05:00 http://pear.php.net/package/Math_Stats/download/0.9.0beta2/ This is a bug fix release. Fixes (finally) an old bug in calculation of the<br /> median. Users of any previous version are recommended to upgrade.<br /> <br /> When I fixed a previous bug in the calculation of the median, I forgot to apply<br /> the full fix, so it was calculating an erroneous value for data sets with an <br /> odd number of entries.<br /> <br /> Thanks to Diego Puga for pointing this out. It is good to get bug reports<br /> when one is getting old and forgetful. ;-) 2003-06-04T22:22:00-05:00 http://pear.php.net/package/Math_Stats/download/0.9.0beta1/ This is a beta release that containes new not thoroughly tested methods and<br /> algorithms.<br /> <br /> Many changes in the existing methods, and a number of new ones:<br /> <br /> - Added better error handling.<br /> - Refactored existing methods to delegate calculations better<br /> - Added value caching for invariant statistical parameters<br /> - Added optional parameters to some existing methods to enhance their<br /> processing or output. Preserve the original behaviour as default so<br /> as not breack backwards compatibility<br /> - Added new methods:<br /> - center()<br /> - studentize()<br /> - range()<br /> - geometricMean()<br /> - harmonicMean()<br /> - product()<br /> - productN()<br /> - percentile()<br /> - quartiles()<br /> - interquartileMean()<br /> - interquartileRange()<br /> - quartileDeviation()<br /> - quartileVariationCoefficient()<br /> - quartileSkewnessCoefficient()<br /> - Added a unit test class based on PEAR::PHPUnit 2003-06-03T02:03:00-05:00 http://pear.php.net/package/Math_Stats/download/0.8.5/ Added methods sampleCentralMoment() and sampleRawMoment() to<br /> calculate the corresponding nth moments of the data set.<br /> Explicit casting of parameters passed to pow() to <br /> circumvent the warnings/errors given by some versions<br /> of the PHP interpreter. Thanks to Stephen Evans for<br /> pointing this problem out. 2003-05-27T23:35:00-05:00 http://pear.php.net/package/Math_Stats/download/0.8.4/ Fixed problem in element selection for the calculation<br /> of the median. Thanks to Jeff Hoover for finding this bug. 2003-05-16T22:17:00-05:00 http://pear.php.net/package/Math_Stats/download/0.8.3/ Another bug fix release. Version 0.8.2 was not released due<br /> to wrong tags and bugs. 2002-05-24T00:22:00-05:00 http://pear.php.net/package/Math_Stats/download/0.8.1/ Bug fix in __sumdiff() and in __sumabsdev(), which made<br /> the variance, standard deviation, etc. be calculated incorrectly. 2002-05-24T00:14:00-05:00 http://pear.php.net/package/Math_Stats/download/0.8.0/ Initial release under PEAR 2002-05-16T04:54:00-05:00