11 Messages
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200 Points
Ratings issue with my title
Hi @Michelle and @Col_Needham, please help me get into direct contact with a supervisor or manager over the rating system (one of you possibly?). My Scorecard film has clearly uncovered a tragic flaw that is causing some damage, and at very least I need to know how the weighting system is generating such a huge anomaly. I am well versed in statistical analysis, so I simply need to know specifically how this anomaly was generated, and be given the chance to discuss what I believe is a very real flaw in this system in need of correction, as I believe it is easy to prove in a simple discussion. Thank you in advance.




Col_Needham
Employee
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8.3K Messages
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191.6K Points
3 years ago
@wcaparas Everything we can say about ratings is covered in the FAQ at https://help.imdb.com/article/imdb/track-movies-tv/ratings-faq/G67Y87TFYYP6TWAV which includes details on why the IMDb weighted average is not the mean.
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Michelle
Employee
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18.3K Messages
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321.9K Points
3 years ago
Hi @wcaparas -
As explained on the Weighted Average Ratings Help page - IMDb does not use the arithmetic mean when calculating the ratings, although the raw mean and median are shown under the detailed vote breakdown graph on the ratings pages. Instead, we use a weighted average scheme. This explains why there's often a discrepancy between the user rating displayed on a film's title page and the arithmetic mean of all the votes cast for that film. For more details about IMDb weighted ratings, see this additional Help Article.
Lastly, note that in order to avoid leaving the scheme open to abuse we do not reveal the exact method used to calculate the final user rating or any other details other than those included in the above-referenced help page.
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