| eyeofcore said: I don't say that they numbers are meaningless, those 60-65% have a meaning, but what they estimate for rest 35-40% of the market is meaningless as a definitive result of 60-65% of US market. |
What complete nonsense. NPD does not track console sales, they track CONSUMER GOODS. Consoles just happen to be some consumer good. NPD has a huge database of consumer behaviour for all shops they have been tracking over decades. They also have a pretty good idea of consumer behaviour in those shops they don't track and qhat those non-tracked shops actually sell. Having around 65% of the market tracked does NOT mean you multiply your numbers by 1.5 to get to 100% tracking. This includes sophisticated statistical evaluations using all the available consumer behaviour, including shop profiles to estimate 100% tracking. That does not eliminate the occasional out-of-bounds number, but NPD numbers should generally be within 5-10% of "real numbers".
