Thank you David for the information. In my opinion this is a ridiculous form of measurement. 4,000 people out of 15 million or so counting the outlining areas.
It is more than adequate for the needs of the users of ratings, who are ad agencies. When the sample is increased, the precision of the results is not significantly enhanced; they have tried samples that are much larger and there is no real difference except with the occasional very small station... and those stations don't buy ratings and agencies don't buy them anyway.
In any case, that is 4,000 persons every day of the year. In the diary system, there might have been over twice the diaries, but only abut 600 in any given day or week as the "panel" turned over every 7 days. Now, we have thousands of daily panelists every day, enough to give accurate ratings right down to the daypart for one show on one day.
In the PPM markets from 40 to 50 in rank, the panel is 900 to 1000 persons. Still, quite enough for nearly all markets to get MRC certification.
Those numbers are not extrapolated like Neilsen?
We are talking about Nielsen. What do you mean by "extrapolated"? That is not a term I have heard used in ratings services.
Like I said, why not just put a chip in each component and get real TSL.
But then you would not get age, gender, ethnicity, language dominance, income, education data. Just the usage of the device. That is not what advertisers want. Again, the purpose of ratings is to support pricing and ad buying by agencies and big direct accounts.
I don't see how anyone can make an argument that the PPM is accurately definitely listenership.
Ad agencies, via the Media Ratings Council, believe the system is accurate.
Media Rating Council (MRC) is a not-for-profit industry self-regulatory body, established in 1963 at the request of US Congress, that audits and accredits measurement services.
mediaratingcouncil.org
In fact, it was the MRC and its members who pushed for the PPM back in the 90's. There were agency "big shots" in every meeting on the early PPM development back around 2001-2002 when it started on air testing in Philly. I can say that because I was at those meetings, too, as one of a small group of radio group representatives.
And I'm new to the board, but I'm im a radio veteran and worked at some of the biggest stations in the US for 2 decades. I just think most of you know more than me and I like to hear your thoughts! I'm grateful for the feedback and appreciate your time.
That is why this kind of dialog is interesting and informative.