3 ms·
Though I don't have aggregate data, I don't think Amazon has this issue. People seem able to differentiate within the 2-4 range when there's an actual purchase
by tel 17y ago
Though I don't have aggregate data, I don't think Amazon has this issue. People seem able to differentiate within the 2-4 range when there's an actual purchase involved.
Then again, Amazon doesn't account for the statistical uncertainty of votes, so it's a little odd as well.
- mynameishere 17y agohttp://74.125.113.132/search?q=cache:QCWrYt03Y8UJ:sloanwordpress.ucr.edu/keyword/product%2Breviews/ http://74.125.113.132/search?q=cache:QCWrYt03Y8UJ:sloanwordp... The econometric results reveal that the reviews for the majority of the products have an asymmetric bimodal distribution. etc. I thought everyone knew this, and it makes sense. You don't review something if you think it's "okay". You review it if you love it or hate it. Rottentomatoes probably has a bell curve because the professional reviewers review everything, whether they want to or not. Also, the reviews on youtube are quite useful, and a three-or-less star average indicates that something is labeled incorrectly (for copyrighted material, tv shows, movies, videos, and the like).
- netsp 17y agoMaybe it's because Amazon asks (and receives) written reviews as well. They make people think a little more. I assume there is still a bias towards the 1 & 5 stars though.
- Anon84 17y agoNot quite. See http://arxiv.org/pdf/0909.0237 http://arxiv.org/pdf/0909.0237 Page 9 Table 4. The closest I've ever seen to the "ideal" curve is the IMDB curve right next to it.
- netsp 17y agoI love that on HN you can get as a response to a vague & half-arsed comment a reference and link to an academic paper. Cheers.