L.A. ratings recall illuminates overall PPM problems

By on Jun, 25 2014 with Comments 0

The Nielsen recall of the April Los Angeles Portable People Meter (PPM) ratings provides an opportunity to talk about what radio researchers and consultants know to be the shortcomings of the PPM sample. Our frustration with the PPM sample springs from the fact that it’s nearly impossible to identify a target audience from month to month. Those of us who dive under the hood observe

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