Just some info for you guys who are a little confused on the median. The reason it is included is because I feel that it is a much better indicator than a mean. The reason is that statistical outliers are largely ignored.
The basic idea is that if you have this data:
20<----3
40<----2
50<----1
60<---- Median
70<----1
90<----2
3000<----3
The mean of this data is (20+40+50+60+70+90+3000)/7 = 475.71
The median of this data is located at the center of the sorted list, or in this case 60. I added the arrows next to the data to show that there were an equal number of entries above and below the median.
Anyways, the idea is that with console sales there are occasionally weeks that are far and away above normal sales and far and away below normal sales and a median quickly and simply ignored both and gives a good picture of what the typical week was like.
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