perl percentile module programmers

This is a module which was written as part of a larger project. Oops and object oriented programming in perl was used. All the coding standards for writing a perl module was followed.

This object will output the percentile of some value in a distribution of values .
Example usage of the module
$zz = Percentile -> New (500);
$zz -> add (37);
$zz -> add (5001);
$zz -> add (49.3);
$yy = $zz -> percentileFor (250);
$yy = $zz -> valueAt (12);
wanted to put in CPAN (the perl module repository) but couldn't find time to maintain it.