quote:
The most commonly cited Nielsen results are reported in two measurements: ratings points and share, usually reported as: "ratings points/share". As of September 1, 2010, there are an estimated 115.9 million television households in the United States. A single national ratings point represents one percent of the total number, or 1,159,000 households for the 2010–11 season.[2] Nielsen re-estimates the number of TV-equipped households each August for the upcoming television season.
Share is the percentage of television sets in use tuned to the program. For example, Nielsen may report a show as receiving a 9.2/15 during its broadcast, meaning that on average 9.2 percent of all television-equipped households were tuned in to that program at any given moment, while 15 percent of households watching TV were tuned into that program during this time slot. The difference between rating and share is that a rating reflects the percentage of the total population of televisions tuned to a particular program while share reflects the percentage of televisions actually in use.[3]
Because ratings are based on samples, it is possible for shows to get 0.0 share, despite having an audience; the CNBC talk show McEnroe was one notable example.[4] Another example is The CW Television Network show, CW Now, which received two 0.0 ratings in the same season.
quote:
Criticism of ratings systems
There is some public critique regarding accuracy and potential bias within Nielsen's rating system. In June 2006, however, Nielsen announced a plan to revamp its entire methodology to include all types of media viewing in its sample.
Since viewers are aware of being part of the Nielsen sample, it can lead to response bias in recording and viewing habits. Audience counts gathered by the self-reporting diary methodology are sometimes higher than those gathered by the electronic meters which eliminate any response bias. This trend seems to be more common for news programming and popular prime time programming. Also, daytime viewing and late night viewing tend to be under-reported by the diary.
Another criticism of the measuring system itself is that it fails the most important criterion of a sample: it is not random in the statistical sense of the word. A small fraction of the population is selected and only those that actually accept are used as the sample size. In many local areas of the 1990s, the difference between a rating that kept a show on the air and one that would cancel it was so small as to be statistically insignificant, and yet the show that just happened to get the higher rating would survive.[11] And yet in 2009 of the 114,500,000 U.S. television households[12] only 25,000 total American households (0.02183% of the total) participated in the Nielsen daily metered system.[13] In addition, the Nielsen ratings one TV per household three perhaps four network model encouraged a strong push for demographic measurements. This caused problems with multiple TV households or households where viewers would enter the simpler codes (usually their child's) raising serious questions to the quality of the demographic data.[14] The situation further deteriorated as the popularity of cable TV expanded the number of viewable networks to the point that the margin of error has increased due to the sampling sizes being too small.[15][16] Compounding matters is the fact that of the sample data that is collected, advertisers will not pay for time shifted (recorded for replay at a different time) programs,[17] rendering the 'raw' numbers useless.
A related 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. In 2005, Nielsen announced plans to incorporate viewing by away-from-home college students into its sample. Internet TV viewing is another rapidly growing market for which Nielsen Ratings fail to account for viewer impact. Apple iTunes, atomfilms, Hulu, YouTube, and some of the networks' own websites (e.g., ABC.com, CBS.com) provide full-length web-based programming, either subscription-based or ad-supported. Though web sites can already track popularity of a site and the referring page, they can't track viewer demographics. To both track this and expand their market research offerings, Nielsen purchased NetRatings in 2007.[18]
After Nielsen took over the contract for producing data on Irish advertising in 2009, agencies said that they were "disastrous" and claimed that the information produced by them is too inaccurate to be trusted by them or their clients.[19]
In 2004, News Corporation retained the services of public relations firm Glover Park to launch a campaign aimed at delaying Nielsen's plan to replace its aging household electronic data collection methodology in larger local markets with its newer electronic People Meter system. The advocates in the public relations campaign charged that data derived from the newer People Meter system represented a bias toward underreporting minority viewing, which could lead to a de-facto discrimination in employment against minority actors and writers. However, Nielsen countered the campaign by revealing its sample composition counts. According to Nielsen Media Research's sample composition counts, as of November 2004, nationwide, African American Households using People Meters represented 6.7% of the Nielsen sample, compared to 6.0% in the general population. Latino Households represent 5.7% of the Nielsen sample, compared to 5.0% in the general population. By October 2006, News Corp. and Nielsen settled, with Nielsen agreeing to spend an additional $50 million to ensure that minority viewing was not being underreported by the new electronic people meter system.[20]
Dus.....
Meer TVs per huishouden = minder representatief model
Meer netwerken en de opkomst van kabel tv
Internet + DVR/TIVO
Hetzelfde AANTAL mensen wat deze week kijkt zou een aantal jaar terug een HOGERE rating geven.
Ik weet bijna zeker dat als je de mensen die live kijken optelt bij de mensen die een torrent downloaden, via Youtube kijken, het opnemen via TIVO/DVR etc etc je niet ver van het aantal kijkers uit 2000 af zit.
En nog eentje dan om je argument helemaal onderuit te halen
http://tvbythenumbers.zap(...)cable-viewing/98876/Goh wie staat er op #11 en #13 in de Top 25?
[ Bericht 0% gewijzigd door kidkash19 op 01-08-2011 16:48:19 ]