You may know that there are webs like metacritic that use some of these scored opinions to give with a simple number how good a product is, which is quite incorrect . A simple mean is assuming that the product has an objective and intrinsic correct score. Using probability and this Poisson distribution we can give probabilities and more accurate data.
I show it all in a PDF (it's in Spanish, sorry), and you can see it here: https://www.caja-pdf.es/2018/07/04/presentacion-fest-avengers/