Barozi said:
nightsurge said:
Max King of the Wild said:
nightsurge said:
Ok, so according to our Chart tools, here are the numbers I have (with rounding to nearest thousand each week):
VGC - USA - Week Ending Dec 8th thru Week Ending Dec 29th (this means Dec 1st, 30th, 31st not included)
Xbox 360 - 1.25 million
PS3 - 0.72 million
I highly doubt that those 3 days = 150,000 sales, so it is looking like the 360 is about 100-150k UNDERTRACKED in USA alone for that time period.
At the same time, PS3 is about 100-150k OVERTRACKED in USA alone for the same time period.
That's an additional swing of 200-300k consoles in the Xbox 360's favor in just the US. That would put the lead back up to over 2 million as of the end of 2012.
Someone please correct me if I've missed something or made an error.
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its a 5 week period... seems like your only doing 4. Its a 100k swing in Ps3's favor
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Does NPD track by week or by day? As in, do their numbers mean Day 1-31 for the month, or do their numbers mean all the weeks that include that month?
The numbers I brought up are using every day but three. Dec 1, 30, and 31. The numbers in this thread are from Nov 25 - Jan 4 which adds an extra 9 days worth of data which distorts the numbers. 3 days less is much better than 9 days more as far as accuracy.
But I suppose none of that matters if NPD tracks data weekly the same way VGChartz does and not day 1-31.
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December is a 5 week month for NPD.
26th Nov - 30th Dec (Starting Monday, ending with Sunday)
Could also be 25th Nov - 29th or 30th Dec, but that doesn't really matter. It's a Sunday after all.
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That just seems like such an odd practice. I work for a software company that does software for tons of retail businesses and all of our systems include the ability to track data by day, week, month, year, etc. including the true "Day 1-31" month tracking, not just the weeks of that month.
You would surely think that a big firm like NPD would be drawing off of that type of data, but if not, that's just too bad I guess. Would make a lot more sense and more accurate in my mind.
