Ratings on Extras

How do you decode the by the ratings/no of votes for packages on the Extras website? Taking an example if I sort my packages by downloaded, hihest first I get this :-

Auditor 1.4-ga 1,692 5.7 - 127 votes Sep 14, 2009
Clarity Pack 1.0-rc-1 610 5.0 - 61 votes Mar 05, 2010
Provisioner 1.4-beta 547 Jun 08, 2010
modx-auditor-analysis 1.1 527 5.1 - 249 votes Dec 03, 2008
Aqueous 1.0-rc-1 453 5.8 - 73 votes Jun 21, 2010

Taking the last two how does 249 votes get a rating of 5.1 but 73 votes gets 5.8?

Taking the last two how does 249 votes get a rating of 5.1 but 73 votes gets 5.8?

I would imaging it’s because the one with the higher votes has had more negative votes ( IE: 1 or 2 stars ) bring the actual percentage down hence a lower rating overall

Interesting, didn’t know you could have negative votes!. I guess the best thing here is to post the algorithm used somewhere, maybe I’ll understand it better then.

http://svn.modxcms.com/svn/modx-components/star_rating/trunk/

OK, ta, so then, the ’votes’ readout that comes with the ratings is total number of votes(stars), the ’votes’on the actual extra’s page itself is ’number of people who have voted’.