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> Those with just one 5 star rating in front of the one with 300 reviews and a 4.8 avg. Annoying. That's easy enough to solve with a bayesian average. The prob
by ddebernardy 8y ago
> Those with just one 5 star rating in front of the one with 300 reviews and a 4.8 avg. Annoying.
That's easy enough to solve with a bayesian average. The problem is many developers and product managers don't know much or anything about stats.
- dorgo 8y agoHow exactly? By adding a number (C) of average (2.5 stars) "virtual" reviews to all products? https://en.wikipedia.org/wiki/Bayesian_average https://en.wikipedia.org/wiki/Bayesian_average
- in9 8y agoyou can also use of a shrunken average. If the group has much data, it has its own average, else it is just a slight deviation of the global mean.
- ddebernardy 8y agoLike so: http://www.evanmiller.org/how-not-to-sort-by-average-rating.html http://www.evanmiller.org/how-not-to-sort-by-average-rating....