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TV Ratings Report

October 20, 2000

Networks sell advertising time based principally on their performance among key demographic groupings, which vary based on the time of day. Ratings performance in these categories gives a rough indication of network revenue in the given period, though profitability can vary based on programming costs and other factors.

Prime Time

Ratings for adults 18-49

Size of group: 124 million

Note: Each rating point equals 1% of group.

Sources: Nielsen Media Research, networks

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