Posted by Charlie O'Brien
on October 13, 2009, 11:03 am, in reply to "Re: P.P.M.'s (whatever that is)"
205.210.253.12
The US PPM we live with here in our Detroit market is similar in physical structure to the Canadian device. The software and the analysis of the data are different.
The Canadian model uses the 'minute' model grabbing useage by the minute - hence "share of time spent listening" or "hours weekly" is the key metric.
In the US they still use the '5 minutes' listening to give your station a "quarter hour" credit.
Therefore share in US markets is of AQH or 'average quarter hours.'
In Canada every minute registered is a credited minute to time listened. Each time you hit a station it "cumes" and the actual time listened is logged.
Sample size is still an issue on both sides. BBM seems to have come up with a novel idea by using the same pool for TV and radio - larger sample size at a smaller cost.
The Detroit Metro population of 4.2 million is rated using approximately 1450-1500 in tab meters per week. Right now averaging about 1450.
More meters are always going to give you better data.
And the meters don't lie.
Responses: