Economics and similar, for the sleep-deprived
A subtle change has been made to the comments links, so they no longer pop up. Does this in any way help with the problem about comments not appearing on permalinked posts, readers?
Update: seemingly not
Update: Oh yeah!
Wednesday, January 13, 2010
Type 3 errors
In statistics, a Type 1 error is a false positive and a Type 2 error is a false negative. Or possibly the other way round, I really don't give one. But there is also such a thing as a Type 3 error - getting the wrong answer because you asked the wrong question. Viz. To see what I mean, imagine that you took a representative sample of the United Kingdom in 1978 and asked people whether they had a favourable or unfavourable view of the IRA. You would presumably have got the result that support for the IRA was a small minority view and that most UK citizens had a very negative view. This would have been entirely correct - if your survey got any other result it would have been badly misdesigned because this was, in fact, the overwhelming view of the UK population. But of course, your answer would have badly misinformed you. That's what I mean by a type 3 error.
this item posted by the management 1/13/2010 10:25:00 AM