What are VGChartz' sources for weekly US numbers?

[archmagus-21]

gebx said:

Alvar said:

Bodhesatva said:

Alvar said:

Bodhesatva said:

Alvar said:

Avinash_Tyagi said:

Alvar said:

 

 

 

 

 

Yes, but obviously the npd numbers have an order of magnitude lower error margin (as far as I understand it they have numbers from 60% of the market or something like that). And as I also said previously, VG-Chartz accuracy may be enough to warrant some discussion around the numbers, but don't assume they are correct numbers, since they could very well be off by a significant amount.

I don't think anyone assumes that the numbers are 100% accurate, but Vgcharts tries to get these numbers as accurate as possible.

Also this is the best and most indepth website on sales figures for videogames. No other website even comes close, so really if someone can find a website that offers what they do, and more accurately then please do provide a weblink.

Well, I just question the value of providing weekly numbers when those numbers are difficult or impossible to get even for professional marketing firms like NPD. And even NPD's monthly numbers are called into question at times, and they have, what, 65% coverage? With additional polling to further establish purchase patterns? I would much rather see VGChartz provide officially released numbers from recognized sales agencies rather than speculating independently. A 10% margin of error is pretty huge when you're talking about hundreds of thousands of units, and I know for a fact that on some months VGChartz' average margin of error is even higher.