Speaking of devices, I keep seeing how there is proof to back up the habits of radio. And I realize I might be crucified by some here for questioning this, but if there are 4 million people in the valley, and 1300 PPM devices (was told from a source), that means every person with a device reps 3000 people? So that should give you an idea of how fictitious the data is.
That is actually a fairly good sample. If you look at the political polls, you will see smaller samples for the entire country, and those polls are usually within a couple of percent of actual voting. In radio, a couple of percent overall is insignificant to advertisers who use ratings to determine pricing.
If the sample faithfully represents all the stratification variables (that means all the subsets of the population like age groups, gender, ethnicity, income, education, etc.) then at the size of the Phoenix sample it should faithfully, and within a narrow margin of error, represent the audience of the major stations.
Of those 1300 people with devices, there may be only a few of those that know of a smaller station.
Correct. A station with a very niche format or limited coverage will have a very small audience. Whether the station gets a 0.0 or a 0.3 it won't get bought by ad agencies and major clients. The purpose of ratings is to provide a pricing metric for large advertisers; small stations near the cut-off level don't get buys from that kind of client and generally don't buy the ratings.
But that wouldn't mean they have crap ratings just because that small group didn't favor it.
It does not matter if there are 1,300 or 13,000 in the sample. A station that does not reach even a tenth of a percent of listeners is not going to get ad buys.
Also, when the device holders are in the office, or the bus, dentist, whatever...they are forced to reflect what they wouldn't normally choose.
That does not matter. Advertisers want to know how many people hear their ads, not who chose the station. Again, ratings are bought to give advertisers a metric.
That obviously explains why stations like KEZ or Mix always win. Does not mean they have the best content, it just happens to be the safe choice of bosses.
Keep in mind that 50% of a station's listeners (cume) represent upwards of 90% of the time spent listening to a station. So all those people whose meters "hear" a station for a few minutes in a week won't contribute very much, if anything, to the listening level of a station.
And if people hear particular stations at work, they hear the ads. That is what advertisers want to know.
Do keep in mind that most "at work" listening is not in white-collar offices. It's in the delivery truck, on the loading dock, in the factory or auto repair shop... as likely to be a hip hop or country station as Mix.