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Because these 8 points are albums he actually bought. It could be that the albums that Amazon sell for cheaper are albums no one buys. By using his own purcha
by yetanotherphd 13y ago
Because these 8 points are albums he actually bought. It could be that the albums that Amazon sell for cheaper are albums no one buys. By using his own purchases, he gets data that avoids this issue.
- corin_ 13y agoIt improves it for music that he buys, not for music that people in general buy.
- yetanotherphd 13y agoThere was no attempt in the article to weight by volume, so his sample of albums is a good test of the claim.