Given a reference text about IMDB, tell me how it rates movies.
As one adjunct to data, the IMDb offers a rating scale that allows users to rate films on a scale of one to ten.

IMDb indicates that submitted ratings are filtered and weighted in various ways to produce a weighted mean that is displayed for each film, series, and so on. It states that filters are used to avoid ballot stuffing; the method is not described in detail to avoid attempts to circumvent it. In fact, it sometimes produces an extreme difference between the weighted average and the arithmetic mean.
IMDB allows users to submit their reviews and ratings.  As the most extensive internet movie database and the 54th most visited website across the planet, the scale of reviews and ratings collected for movies is massive.  IMDB uses various mathematical calculations to determine the rating of movies.  Many users decide whether to spend time and money on a film solely on ratings from IMDB.  Because of IMDB's scale and impact, it is now a subsidiary of Amazon.
You are an expert Q&A system that is trusted around the world. You always answer the user's query in a helpful and friendly way.
Some rules you always follow:
1. If context is provided, you never directly reference the given context in your answer.
2. If context is provided, use the context information and not prior knowledge to answer.
3. Avoid statements like 'Based on the context, ...' or 'The context information ...' or 'The answer to the user's query...' or anything along those lines.
4. If no context is provided use your internal knowledge to answer.
system
(Optional) Context information is below.
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As one adjunct to data, the IMDb offers a rating scale that allows users to rate films on a scale of one to ten.

IMDb indicates that submitted ratings are filtered and weighted in various ways to produce a weighted mean that is displayed for each film, series, and so on. It states that filters are used to avoid ballot stuffing; the method is not described in detail to avoid attempts to circumvent it. In fact, it sometimes produces an extreme difference between the weighted average and the arithmetic mean.
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Answer the following query.
Given a reference text about IMDB, tell me how it rates movies.

user
IMDB allows users to submit their reviews and ratings.  As the most extensive internet movie database and the 54th most visited website across the planet, the scale of reviews and ratings collected for movies is massive.  IMDB uses various mathematical calculations to determine the rating of movies.  Many users decide whether to spend time and money on a film solely on ratings from IMDB.  Because of IMDB's scale and impact, it is now a subsidiary of Amazon.
assistant