Have you read the rules in the blogthe rules in the blog? If not, you should.
- Questions must not be community wiki.
- Questions must not be closed.
- Questions must be older than 3 days.
- Questions must have at least 1 answer.
- There must be at least four eligible questions as determined by the above rules, otherwise the count will not appear.
Also, the tooltip now shows the numbers used in the calculation.
(one final caveat: accept rate is going to be less meaningful here on meta than elsewhere, just because of the nature of meta..)