IMDB drops our rating from 7.6 to 6.1 after we flag a fake review!

Thank you for responding Ozzy. However, could you please tell us why specifically we dropped 1.5 stars out of 10 in a single vote, in a single day? At 111 votes, we were at 7.6. The day before at 109 votes, we were at a 7.7. The day after we had 112 votes and we dropped a staggering 1.5 points down to a 6.1. That is mathematically impossible. So could you please tell us what's going on? We have sales riding on what people read on IMDB, this is very serious to us. Thank you for your help.

@SevenfoldFilms​ Hi!

 We don't use the arithmetic mean, we use a  weighted average. Visit our ratings FAQ linked above.

Cheers!

Hello Bethanny,

No one seems to be actually answering the question though. How did our score drop from 7.6 to 6.1 within a single vote? I attached the image in the original post as proof. This jeopardizes the sales of our film and it's something IMDB needs to take seriously. How did that happen and is there a handicap or manual override someone at IMDB used to do this?

Hi @SevenfoldFilms,

As @Bethanny mentioned, we use a weighted average which is explained in the Ratings FAQ. Otherwise, please review the below FAQ item for further guidance on how the weighted average can affect a title's overall rating.

The rating on a title changed even though the total number of votes did not. Can you explain this?

There are several possible explanations for this. First, users are allowed to delete their own votes. So if the rating changes even when the total doesn't, it usually means that some people have deleted their vote while the same number of people have added theirs. Another common explanation is that the weight assigned to votes cast by certain users has changed, so the weighted rating will be affected even when no new votes have been cast.

Finally, please remember that our voting system is always being improved and the formulas used to calculate ratings (and defeat ballot stuffing) are tweaked regularly -- weighted ratings are frequently recalculated, so when the formula is changed the ratings will also change even without new votes.

Rest assured, all calculations are applied automatically and there's no human bias in how aggregate ratings are calculated. 

I hope this helps!