How accurate are Nielsen ratings?

No one really knows.

There are statistical models to support their validity. They’ve been doing it a long time and have revised and improved methods over the last fifty years. But still – one schlep in Clovis, New Mexico who hates Amy Poehler because she reminds him of a girl who once dumped him could represent 2,000,000 viewers.

With more and more people getting cable boxes or satellite