jarrod on 15 November 2010
| Kasz216 said: Er... considering that NPD and their internal trackers are also just polling retailers... I fail to see the difference. Outside of sample size anyway. |
NPD also includes consumer side tracking (ie: polling) in their methodology. In fact, that's specifically how they cover Wal-mart and Sam's Club.
Hell, NPD had a registered polling base of 1.8m. They tout it on their site even.
