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| | Nielsen Ratings at AllExperts |
 | | 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 the television programming they watch throughout the day and evening. |
 | | 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. |
 | | Another criticism of the Nielsen ratings system is its lack of a system for measuring television audiences in environments outside the home, such as college dormitories, transport terminals, bars, and other public places where television is frequently viewed, often by large numbers of people in a common setting. |
| en.allexperts.com /e/n/ni/nielsen_ratings.htm (1633 words) |
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