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Audience Ratings

. By March 1950 Nielsen had purchased Hooper's national radio service.1

Nielsen turned to television in the early 1950s and began taking metered ratings information and analyzing it. He added television markets throughout the 1950s and started national ratings based on total television households beginning in 1960. By that time, station and network facilities had increased to the point where the average network program could be viewed by well over 90 percent of all U.S. TV households. Ratings were based on a sample size of 1100 homes. By 1965, Nielsen had converted to a new sample based on the 1960 census data and added the Mountain Time zone. A systematic sample was now constructed so that no homes remained in the sample over five years. The sample size in 1965 was 1150, increased to 1250 by 1982.2

Nielsen also continued to improve Audimeter technology and introduced the Storage Instantaneous Audimeter (SIA) in 1973. This device provided day-after ratings for local market services in New York and Los Angeles and 48-hour ratings for national network television shows. The SIA device records all set usage and holds the data in storage ready for retrieval from Nielsen's main computer center in Dunedin, Florida. The sample homes are connected by a special telephone line so that the

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Audience Ratings. (1969, December 31). In LotsofEssays.com. Retrieved 02:40, March 29, 2024, from https://www.lotsofessays.com/viewpaper/1683705.html