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Orochimaru on 13 December 2007
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naznatips said:
tokilamockingbrd said:
Not bad really, I am sure that VGC would like to be able to get it within the .05 alpha, but not bad.

It's really impossible for any tracking service without 80% retail sources to ever have less than 10% margin of error. Even NPD isn't anywhere near this, and their numbers have in the past been far off of reported shipping numbers. Media Create and Famitsu both hold about 60% retail data for Japan and yet disagree greatly on various things. Being wtihin 15% is pretty good. Past that VGC adjusts to official shipping reports and releases comparisons to NPD numbers.


 Media Create is holding over 90% of retail data, ChartTrack to, NPD ~ 65%