The interval tag is awful. It has 94 threads and the following excerpt:
Statistical intervals, such as confidence, credible, prediction or tolerance intervals.
but in fact we have separate well-established tags for confidence-interval (2k), credible-interval (60), prediction-interval (200), and tolerance-interval (30). I would say it makes sense to replace
[interval] with more specific tags everywhere where applicable.
What is worse, is that
[interval] tag is often used to refer to "interval data" -- a term that has nothing to do with any of the mentioned statistical intervals. See. e.g. 24 questions tagged with [interval] and [ordinal]. This usage is directly against the wiki excerpt. I would say that we do not need any tag for interval data because all data are interval unless stated otherwise. Alternatively, we can retag those with [interval-data]. What do you think?