Audience: demographics, categorising audience..

Category audience groups: This is done by comparing wealth, employment and education. Meaning therefore that you can be on a very high wage(singer) with only school level education therefore would be in a lower grade due to their lack of higher education. 
-age,
-class,
-ethnicity,
-gender,
-religion,
-earnings,
-education.

A;   100K+
B;   50-60K+  (graduate, 35k+, employed, careers work their way up the social chain.)
C1;                 (graduate, 35k+, employed, careers work their way up the social chain.)
C2;                 (graduate, 35k+, employed, careers work their way up the social chain.)(Training->jobs
                                                                                                                               school level education)
D;   (Training->jobs, school level education.)
E;    (Not in Education, employment or Training(NEET) students/retired/unemployed)

This system is used for the industry not the the audience, this is so that the producers can find out where their product is heading. Therefore helping with...

-product placement

-marketing and promotion

-focus groups

-creating a target market.

This is so that the producers can target the correct market, therefore creating maximum revenue and interest in their product.

There are 3 types of Target for the producers.

-traditionalist; set in stone the film will fulfill the viewers needs (James Bond) These types of viewer will only change between the genres they like if there is a influential actor to them such as Daniel Craig, because they like him in James Bond. James Bond fanatics are likely to also likely to like films such as xXx, The Bourne films, Bruce willis(Die Hard) and also The mission Impossible series.

-hedonist; random, unusual films. These viewers will chop and change between what ever film they want to see, they are not a specific target market they will go and see anything which goes against conventions. Also seeing films which there are films that they have never seen before (Drive)

-post modernism; This viewer likes the new technology, they would have been the first type of viewer who went to see Imax, 3D, and films such as 'The Matrix' where the machines take over the world and use humans as batteries for themselves and keep the humans in a surreal dream for there whole lives.