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Encyclopedia :: encyclopedia : Nielsen ratings (Site not responding. Last check: 2007-11-04) |
 | | Nielsen Television Ratings statistics are gathered in two ways: one is by extensive use of surveys, where viewers in various demographics are asked to keep a written record (called a diary) of what shows they watch at what times. |
 | | Advertising rates are less influenced by total number of viewers than they are by appealing to particular demographics, such as age, sex, economic class, and area. |
 | | Much of the ratings system, however, still consists of the completion by viewers of ratings diaries, in which a viewer records his or her viewing habits, generally for a week, in exchange for being advanced a nominal fee. |
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