[ANNOUNCEMENT] Math_Stats-0.9.0beta1 (beta) Released.

The new PEAR package Math_Stats-0.9.0beta1 (beta) has been released at http://pear.php.net/. Release notes ------------- This is a beta release that containes new not thoroughly tested methods and algorithms. Many changes in the existing methods, and a number of new ones: - Added better error handling. - Refactored existing methods to delegate calculations better - Added value caching for invariant statistical parameters - Added optional parameters to some existing methods to enhance their processing or output. Preserve the original behaviour as default so as not breack backwards compatibility - Added new methods: - center() - studentize() - range() - geometricMean() - harmonicMean() - product() - productN() - percentile() - quartiles() - interquartileMean() - interquartileRange() - quartileDeviation() - quartileVariationCoefficient() - quartileSkewnessCoefficient() - Added a unit test class based on PEAR::PHPUnit Package Info ------------- Package to calculate statistical parameters of numerical arrays of data. The data can be in a simple numerical array, or in a cummulative numerical array. A cummulative array, has the value as the index and the number of repeats as the value for the array item, e.g. $data = array(3=>4, 2.3=>5, 1.25=>6, 0.5=>3). Nulls can be rejected, ignored or handled as zero values. Related Links ------------- Package home: http://pear.php.net/package-info.php?package=Math_Stats Changelog: http://pear.php.net/package-changelog.php?package=Math_Stats Download: http://pear.php.net/get/Math_Stats-0.9.0beta1.tgz Authors ------------- Jesus M. Castagnetto <jmcastagnetto@php.net> (lead)