# Why is rating messed up? I rated an instructable at 1 star, and it then gave it 4 stars. (There were no other ratings)? Answered

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The forums are retiring in 2021 and are now closed for new topics and comments.

I read from someone who works the site:
(my interpretation) its based on an algorithm that incorporates how active a community member you are, the average site rating of all ibles (to get a baseline of what average really is), how many engagements the voter has, etc.

Basically what it sums up to in MY estimation is that a good 5-10 votes pad the actual the votes tallied as 'average site ible rating', and those averaged pad votes are bumped out as more people vote:
say average is 4.0
someone votes one
ible rating is 4+4+4+4+4+4+4+4+4+1 averaged is 3.7
another one
4+4+4+4+4+4+4+4+1+1 averaged is 3.4
someone votes 5
4+4+4+4+4+4+4+1+1+5 averaged is 3.5

and the weight your actual vote has (calculated before its added to the above formula) would be a factor of how many times you have voted, number of comments made, number of ibles published, etc. I haven't the foggiest the math behind this.