<p>This tag is now empty, and if I understand correctly will auto-delete. there remain a few with the tag linear-combination which as @amoeba pointed out could apply to most posts here so unless anyone objects in comments here I will deal with them in a few days unless anyone else like to do that.</p>

<p>Update: I have removed the [linear-combination] tag from all 8 which had it and in one case added [contrasts]. I think [combining-models] could be replaced with [model-averaging] without loss of information and perhaps some of [combining-estimates] and [combining-predictions] could be similarly re-tagged. The one which stumps me is [combinatorial]. I think it means something different from [combinatorics] but I do not really understand the area well. If nobody objects here I will do the re-tagging I suggest and hope someone else will pick up the [combinatorial] issue, perhaps by writing a wiki excerpt.</p>

<p>Final, I hope, update: I have now removed all of [combining-predictions] and [combining-estimates] so when the tag fairy sprinkles her magic dust on them the last one will disappear.</p>
