I'd love to see an update here that:
* Included a graph of the resulting ordering of the two dimensional plane and some examples
* Included consideration of 5- or 10-star scales.
* Included a graph of the resulting ordering of the two dimensional plane and some examples
* Included consideration of 5- or 10-star scales.
There's a whole section on their website that has different statistics for programmers, including rating systems [3].
[0] https://www.evanmiller.org/ranking-items-with-star-ratings.h...
[1] https://en.wikipedia.org/wiki/Approximate_Bayesian_computati...
[2] https://www.evanmiller.org/bayesian-average-ratings.html
[3] https://www.evanmiller.org/ ("Mathematics of user ratings" section)
For example a 3/5 stars turns into 0.6 positive and 0.4 negative observation. Following the formula from there will give a lower bound estimation between 0 and 1, so then you just multiple by 5 again to get it between 0 and 5.