Definition of audience composition

Advertising: proportion of various types of people, classified by demographic or psychographic characteristics, reached by an advertising medium or message.
Broadcast: breakdown by program of the listening and viewing audience according to gender and age. The number in each category is compared against the total number of the listening or viewing audience for that program. (For example, 10% of a viewing audience for a specific television show might be adult women, while 20% might be adolescents.) This information allows the advertiser to position the message in or around a program that appeals to the people most likely to utilize the product or service. Since different time periods ( daypart) in programming have different costs, knowledge of audience composition permits the advertiser to select economically those hours during which a specific audience can be reached. See also audience profile.