Users A and B both have 2000 reputation. However, user A has attempted in answering 10,000 questions and only 1000 of his answers have been upvoted. User B, on the other hand, only has 400 answers, but all his geese are swans, and he has even grabbed some bounties on the way.
If they both answer your question, who would you take as a more authoritative source?
I would choose B. But what indicator can sum up this difference between them?
I've been thinking about average and median, but both have their own disadvantages. If we take the average rating of a user's answers, it can skyrocket because of one answer with 200 upvotes, even if most other answers suck. The median will give integer numbers, and I guess for most users the median would be either 0, 1 or 2, so there's not much information in this rating.
What do you think? Or is there already such an indicator and I missed it?