tammymc opened this issue on Aug 28, 2003 ยท 22 posts
tammymc posted Thu, 28 August 2003 at 2:28 PM Site Admin
Attached Link: http://news.morningstar.com/news/ms/Investing101/riskybusinesstwo.html
We have changed how the rankings work in the gallery. The formula is now based on identifying the standard deviation of the rankings instead of the overall average. Once we have calculated the standard deviation, we then multiply it by 2, add and subtract that amount from the true average ranking to create an average maximum and average minimum ranking. This determines the bell curve of acceptable rankings. Anything exceeding the maximum or minimum is excluded and the new average is based upon all rankings within these two limits divided by the number of rankings within these two limits. I have provided a link that better communicates standard deviations if anyone has any spare time and is excited to read about this. :) We hope this is going to provide a ranking system that members find to be more accurate and fair. In order for this to work appropriately, we have to have multiple rankings on one image. To be considered for the ranking, an image must have 5 or more rankings listed. Those with 4 or less rankings on an image will not be displayed in the ranking areas. This does not change anything else with the galleries. This is only related to the Best Ranking areas. We have added a statement within the Best Ranking areas to communicate what image is going to be listed in the ranking area. "Only images with 5 or more rankings will be displayed." Thanks to all the members who communicated this issue to us and was patient until we were able to work through this process. thanks tammy