When I rate a movie or a series it doesnt show on the overall rating.

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  • Updated 2 years ago
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For example if a 100 people have rated a movie and then I rate it, then obviously it should change to 101 ratings. But it doesnt, wich sucks because thats the whole point.
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Posted 2 years ago

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Photo of Vincent Fournols

Vincent Fournols

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It will change indeed, but the system architecture and its multiple platforms do not make it dynamic. As far as I know, the figures are refreshed a few times a day.

An IMDb staff should confirm this soon.
Photo of Vincent Fournols

Vincent Fournols

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Please also consider that, besides showing the number of ratings, the actual rating mark is recomputed according to some secret formula, taking into account several aspects attached to the submitter. I.e. not all ratings are included in the computation and some may be weighed.
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Col Needham, Official Rep

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Thanks Vincent, specifically from https://help.imdb.com/article/imdb/track-movies-tv/faq-for-imdb-ratings/G67Y87TFYYP6TWAV

How do you calculate the IMDb rating displayed on a title page? 

We take all the individual ratings cast by IMDb registered users and use them to calculate a single rating. We don't use the arithmetic mean (i.e. the sum of all votes divided by the number of votes), although we do display the mean and average votes on the votes breakdown page; instead the rating displayed on a title's page is a weighted average. To display the detailed votes breakdown, click the number of votes located directly below the average IMDb user rating. For an example, see the User rating breakdown for 
Inside Out

The IMDb weighted average does not change upon receipt of each new vote, but instead is updated numerous times per day. 

A TV series rating is not the weighted average of the ratings of individual episodes. Instead, customers vote separately for the rating of the series as a whole via each title’s series page.

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