I was wondering about a question similar to Why haven't I received the "Curious" badge? (for another site), where my "stats" are currently "10/5" (instead of "13/5"). The answer from "Shadow Wizard" links to Robert's answer, which links to yet another "this answer". This last answer has some details about the actual calculation (like the "10" in my case), which is like so:
A positive question record means you don't have too many closed, downvoted or deleted questions, overall. The formula is (total questions - negative questions - closed - deleted)/total questions >= 0.5. Questions that have been downvoted and closed and deleted count three times in this calculation!
Somewhere I also read that these deleted questions seem to count for 3.
But the OPer of a deleted question cannot see deleted questions anymore after a while (X days) either. So that seems to make it impossible to actually "verify" your own score (the "7" part), and also how many more "good questions" will be needed. In my case, I'm aware (remember) that there has been at least 1 question deleted. So I assume in my case the "7" must become at least "8" (I don't have negative or closed questions), though I doubt that will be sufficient. Also because I have 2 more questions with a zero votes balance (which makes me wonder also how accurate the "total questions" in the above quote really is ...).
My suggestion: think of a way to somehow clarify (visualize) the formula quoted above. Or as a variation at least provide some way to find out the exact number of you questions that were ever deleted (not just the recently deleted ones). Or maybe some other type of indication to indicate "how much more good questions are needed to ever receive the "Curious" badge.
Update: I recently learned about adding
deleted:yes to a query. With that, these are some more stats about my questions (using "12345" to represent my user id from the site where this question is about):
user:12345 is:q - results in 14 (not deleted) questions, 11 of them have a positive (> 0) voting balance, none of these 14 are closed.
user:12345 is:q deleted:yes - results in 7 (deleted) questions, with this Status / Voting balance for each of them:
|Question id||Status||Voting Balance|
So with that extra info, and as per the "Questions that have been downvoted and closed and deleted count three times in this calculation!" I think (guess) in my case the 2 deleted questions with negative voting balance corresponds to -(2*3)=-6 ... So that the "stats" in my case will have to become something equivalent to "(11-6)/5" = "5/5" ... Just guessing, and fingers crossed to see what will happen if I ever post a new question on that site that does not get downvoted+deleted (assuming all other votes for my existing questions don't change in the meantime).