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kowenicki said:
wary-wallaroo said:
NYANKS said:
kowenicki said:
NPD make estimations too.

They make errors, indeed they did quite recently and in a big way on cable subscriptions.

NPD aren't ifallible, no tracking method is.

How much better than this site are they?


A lot better. There's a reason companies pay NPD group so much.


"a lot"

awesome.  very scientific.

can you put a margin of error, perhaps compare standard deviation on both of their data sets, seeing as you have access to it?

 


Come on dude, between NPD and Chartz, it's pretty simple to see which one is more accurate. If VGchartz were better, I doubt big corps would be willing to pay NPD their asking price.