Resolved. The tag span is now synonym of linear-algebra. I also suggest a removal of the tag span. It isn't really that meaningful to warrant its own tag. Often in linear algebra, we are considering spans of vectors implicitly. If the tag was being applied correctly, a large portion of the q...

We have three ambiguous tags average, expectation and means. They are often used for probability and statistics problems. The tag expected-value has been synonymized with probability. The current tag excerpts and info for these three tags are not clear enough. The average tag includes arithme...

I propose that expected-value should no longer be a synonym of probability, and expectation should become a synonym of expected-value, which would clear up at least 50% of the confusion here. (So that voting on this proposal could actually mean something, I will avoid weighing in on meanshere.)

Summary Thread for Implemented Changes (Please do not edit this answer unless you are a moderator. All proposed changes should be added as new answers to the question. Users with 10K+ reputation will still be able to see the original dates of proposals and implementations.) One should also note...

The tag conditional-probability has been deleted/subsumed/transformed into the tag probability roughly five years ago, thus making impossible to signal as such, questions involving conditional probabilities conditioned by a sigma-algebra in the general case, and in particular conditional probabi...

Resolved (the synonym is no more) The tag conditional-probability has been deleted/subsumed/transformed into the tag probability roughly five years ago, thus making impossible to signal as such, questions involving conditional probabilities conditioned by a sigma-algebra in the general case, ...