You can't use Wilson's confidence with a star-rating system. Wilson's only works for binary systems. Instead you could use a weighted baysian rating: br = ( (

You can't use Wilson's confidence with a star-rating system. Wilson's only works for binary systems. Instead you could use a weighted baysian rating: br = ( (avg_num_votes * avg_rating) + (this_num_votes * this_rating) ) / (avg_num_votes + this_num_votes)