| Lusche said: idk how it would work, but how would you do the yoy npd jan 2013/2014 calculation ? while it doesn't reflect the weekly numbers because of a 5week to 4week is the calculation of a yoy different ? |
The neatest way to handle the situation is to scale relative to number of weeks - so the 2013 numbers, rescaled to a 4 week period, would then be compared with the 2014 numbers (and the 2012 numbers, which also were on a 4 week period). This should actually slightly benefit 2013, since it includes data from a week in which sales would typically be higher than in the rest of January, while 2014 misses that week (I'm referring to 30th of December through 5th of January). So in theory, you should adjust the numbers down just a little further.
A slightly more nuanced approach might be to use VGChartz's numbers for the extra week for the 2013 period (as it's quite old, it has presumably already been "adjusted", so those who complain about accuracy of recent numbers can't complain about this) - subtracting that week off (23,339 for Wii U), we get about 34k, compared with 49k for 2014. Of course, this is now very slightly benefiting 2014, since the 2013 period now includes 2nd of February while 2014 includes 5th of January, and 5th of January should be the slightly better sales day.
VGChartz numbers for the remainder of January 2013 puts it at 43k, so if we were to assume that the total needs adjusting to match NPD, then we have that first week being 17.7k, and thus the total for the remaining four weeks works out to 39-40k. Compared with 49k for 2014.
Really, no matter how you view it, Wii U is up YOY in the US, unless you intentionally ignore the distinct lengths of periods (and if you're happy to ignore the lengths of periods, why not just compare all of 2013 with all of 2014 now?)
