General Guide by Isthatok
Not Updated For Current Season
You may have come here wondering why your newly published guide has a 56% rating with only 1 vote, and how that is even possible.
Look no further - this guide has the answer!
The Bayesian Average
Mobafire uses a system called the Bayesian Average to calculate ratings for all of its guides. You can feel free to wiki it up if you'd like but I will summarize it in one sentence here:
Mobafire adds seven hidden votes at 50% each to every guide that has at least one vote.
Here's the formula for how you calculate a guide's rating. I've tested it enough to say for certain that it is 100% accurate. Just plug in any number that you want and you'll get a rating for it.
So say for example you have 10 upvotes and 2 downvotes. According to the formula, you would get 71%.
Mobafire also rounds to the nearest whole number percentage, so if for instance you had a 84.5% it would be bumped to 85%.
You can find it here:
Just type in the values you want and it will calculate your rating. Simple!
Why Bayesian Averages?
By doing this, new guides can't receive excessively high ratings. In turn this creates a more accurate representation of the rating distribution within Mobafire. This way, highly rated guides that have been around for a long time won't get outrated by a newly published guide that "got lucky" for awhile. As a guide receives more and more votes, the seven hidden votes bear less weight and the guide approaches its true rating.