[QUOTE="mjarantilla"][QUOTE="Callous-Bstard"][QUOTE="mjarantilla"][QUOTE="MrConvoy"][QUOTE="mjarantilla"] [QUOTE="Dilrod"]VGChartz never claims the data as their own. They do an estimate, then compare it to the actual NPD numbers. Its stated right on their site.Callous-Bstard
Doesn't change the fact that their weekly numbers are utter BS.
I agree partially, but who else is there to go to for figures? It's not NPD puts the figures on their front page like VGChartz does.
It's ok to still use VGChartz, but only for monthly numbers which are actually based on NPD's numbers. But their weekly numbers are BS.
Well NPD aren't perfect....they simply estimate from a certain number of retailers (they don't even get figures from Walmart..one of the largest game retailers out there)..
None of the figures are 100% correct be it from NPD of VGChartz.
At least VGChartz makes a decent effort..which is more than anyone else has ever tried to do. I applaud them for at least trying to make a sales database.
Of course the irony is that thanks to the NPD now hiding their figures...more and more people will use VGChartz and more official news websites will use their figures.
NPD's number ban is making VGChartz the only show in town...there's nowhere else to go....so they will be further legitimised by the media.
Firstly, statistics is ALL about estimating. With a large enough sample space, you can make predictions to within a remarkably small margin of error, on the order of less than 1% error. Perhaps even less than 0.1% error. You know pre-election polls that presidential candidates run during their campaign? Those only involve a thousand (or at most, a few thousand) people at a time. It doesn't matter that the population of the U.S. is 350 million. Those polls of one or two or three thousand people can still accurately measure the vote divisions to an accuracy of within a few percentage points. That's because polls don't measure actual values, they only measure trends, and the trends demonstrated by a smaller group within a larger group are less and less likely to vary from the overall trend of the larger group as the sample population gets bigger.
NPD covers roughly 60% of the retail population. That is a large enough sample population that any trend they derive from their findings is likely to be very, very, VERY close to the actual trend. VGChartz covers probably a few dozen stores, maybe even over a hundred. Even still, that's not enough to accurately chart a trend at the state level, let alone the national or global levels. That's why VGChartz varies by more than 30%, while NPD probably varies by less than 1%.
I disagree. The accuracy of figures has as much to do with the type of retailerscovered not just the quantity. I would say that excluding a massive retailer like Walmart must really scew the NPD figures for sales of family titles.
I would certainly hazard a guess that a much larger percentage of sales for games such as The Simpsons or Brain Age come from places like Walmart...because that's where the casual/non-gamer would go to buy games.
I could do a poll asking half the population what their favourite tv show is...but if 90% of those polled are women then it's hardly going to be an accurate representation.
Anyway, regardless of the accuracy of certain figures...VGChartz will become a much more used source by the media...and NPD only have themselves to blame. Most people would rather have a steak than a burger...but if the steak has been taken off the menu then they will settle for the burger.
That's why NPD also directly polls consumers in addition to polling retailers. And they take down demographic information to eliminate unknown skewing factors.
Come on, do you really think they haven't thought of this? That isn't even a high school level statistics problem you're talking about.
And don't kid yourself. NO ONE will use VGChartz except for System Wars fanboys. If we're going to use food analogies, if NPD is a steak, then VGChartz isn't even a hamburger. It's a hunk of rotted meat infected with mad cow disease fished out of a vulture's mouth and cooked in a burning trash heap.
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