Visualising the Wilson score for ratings
Reddit’s new comment sorting system (charmingly explained by Randall Munroe) uses what’s called a Wilson score confidence interval. I’ll wait here while you read those articles. If you ever want to implement user-ratings, you need to read them. The summary is: don’t use average rating. Use something else, which in this case, is the Wilson score, which says that if you got 3 negative ratings and no positive ratings, your average rating shouldn’t be zero. Rather, you can be 95% sure that it’ll end up at 0.47 or above, given a chance, so rate it as 0.47. ...
