Solve : How to properly calculate rating??

1.	Solve : How to properly calculate rating??
Answer» HEY guys, I have a rating for various items on my site and I would like to make sure that "top rated" section works properly. For example, let's call OBJECT 1 - Item1 and object 2 - Item2. Objects are rated out of 5, no decimal. If Item1 has been rated 5 twice this makes average rating of 5. (10 divide by 2 equals 5). AND Item2 is rated 12 twice using different ratings which averages to 4 out of 5. If I were to display these items by highest rated objects would be displayed Item1 first and Item2 second. My problem, what's the formula for CALCULATING proper rating? The way I see it Item2 should be higher than Item1 because it has more ratings EVEN though it's average rating is 4 which is close enough to 5. Any ideas? Thanks in advance.

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