[quote name=\'Ian Wallis\' date=\'Aug 1 2003, 08:34 AM\'] Years ago the "Nielsen Families" numbered 1200. I remember hearing they were going to increase it to 1700. Does anybody know the correct number they use now? Has it increased? [/quote]
Nielsen says:
Nationally, there are 5,000 television households in which electronic meters (called People Meters) are attached to every TV set, VCR, cable converter box, satellite dish or other video equipment in the home. The meters continually record all set tuning. In addition we ask each member of the household to let us know when they are watching by pressing a pre-assigned button on the People Meter which is also present. By matching this button activity to the demographic information (age/gender) we collect at the time the meters are installed, we can match the set tuning – what is being watched – with who is watching. All these data are transmitted to Nielsen Media Research’s computers where they are processed and released to our customers each day.
In addition to this national service, we have a slightly different metering system in 55 local markets. In each of those markets Nielsen Media Research gathers just the set-tuning information each day from more than 20,000 additional homes. We than process the data and release what we call \"household ratings\" daily. In this case we can report what channel or program is being watched, but we don’t have the \"who\" part of the picture. To gather that local demographic information, we periodically (at least 4 times per year) ask another group of people to participate in our diary surveys. For these estimates, we contact approximately 1 million homes each year and ask them to keep track of television viewing for one week, recording their TV viewing activity in a diary. This is done for all 210 television markets in the United States in November, February, May and July and is generally referred to as the \"sweeps\".
Randy
tvrandywest.com