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A comment on Amazon’s algorithm is hiding the best deal from many customers. Parent comment

Re:Amazon’s algorithm is hiding the best deal from many cust... by cstejerean on Sunday September 25, 2016 @12:53PM (#12576100)
At a glance I feel like I am missing something. If the average without the US is 23.3% and the US average is 27.1% then how can the combination of the two lead to an average of 27.7%? That doesn't seem right.

I understand that including the US would raise the average, but it shouldn't take it from below the US average to above the US average.

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Re:Amazon’s algorithm is hiding the best deal from many cust... by briandh on Sunday September 25, 2016 @12:58PM (#12576138)
The average is weighted by GDP (another reason it is important to examine the rankings).
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