Kabrich said:
There is no 5 minute Cume Rule. You write down in the diary you listened to a station for 1 second, you are in the Cume. You pass by someone playing a station and the PPM picks it up, you are in the Cume.
I am afraid that disagrees with the PPM description of methodology, the latest edition of which states, "Weekly Cume Persons
[Weekly Cume (00)] Weekly Cume Persons is the number of different, unduplicated persons within aspecific demo that have been exposed to the target station for at least five minutes during a quarter-hour within a specified daypart during an average week in the
report period. Weekly Cume Persons estimates for individual stations are determined by summing the weekly weights for each panelist with at least one quarter-hour of listening to that station within a daypart for each week in the report period, and dividing by the number of weeks in the report period. Weekly Cume Persons estimates are rounded to hundreds."
There is a 5 minute AQH rule which means to be counted in that Quarter Hour, you need to listen to the station for at least 5 out of 15 minutes.
And to count in cume, you must have at least a quarter hour per your formula. Some are not aware that the 5 minutes don't have to be consecutive in the PPM, but did have to be in the diary.
Unfortunately, because they do not give you 5 minutes of listening in the Quarter Hour, its meaningless - and thus you would never see it in the numbers you see on radio-info.com. We are now referring to this as "drive by Cume" as you get Cume Credit for it - but it does you no good in the ratings numbers you see from Arbitron on Radio-Info - it doesn't count.
"Minimum Reporting Standards (MRS) An encoded station or combo is eligible to be listed in the Radio Market Report if the station or combo has achieved at least five minutes of listening (within a quarter-hour) from at least one in-tab PPM panelist and an average Weekly Cume Rating of at least 0.495 during the Monday-Sunday 6AM-Midnight daypart for the applicable report period."
So the cume only counts if there is also a credited quarter hour to go with it.
But the issue is not retaining 18-34 men or ethnic groups... the problem is not obtaining them... that is done by oversampling.
Trust this, if oversampling was the solution, this problem would have been solved years ago. There are a number of weeks when there are not 30 males (18-24 and sometimes 18-34) surveyed. Easy enough to discern since Maximiser will not provide data unless there are 30 listeners sampled in the target demo . . . sometimes you have to go 2-3 weeks deep to get 30 younger males.
Arbitron never sold us a weekly or even monthly diary service. They sold us a 12 week sample that, at the end of 12 weeks, was supposed to be fairly well balanced in each demo, fter the whole sample is obtained. And the way they get at least close to the problem cells, such as 18-34 males and Hispanics, is by doing lots more calls, using DST, and in general using a quota sample rather than a random probability sample on the problem cells... that is oversampling as there is no longer a random sample when they do that.