Revision as of 21:32, 17 July 2011 edit SineBot (talk \| contribs) Bots 2,564,953 edits m Signing comment by Snoopy67 - "→Online algorithm: " ← Previous edit		Revision as of 21:35, 17 July 2011 edit undo Snoopy67 (talk \| contribs) 32 edits m →Algorithm III Next edit →
Line 103: :I'm talking rubbish it's fine as x[n]-mean[n] = (n-1)/n*(x[n]-mean[n-1]). Sorry! --[[User:Cfp\|cfp]] 22:20, 15 August 2006 (UTC) --[[User:Snoopy67\|Gabriel]] ([[User talk:Snoopy67\|talk]]) 21:35, 17 July 2011 (UTC) I think, the advantages of Welford's algorithm should be toned down. It is no more numerically stable than the direct two-pass method. See http://www.johndcook.com/blog/2008/09/26/comparing-three-methods-of-computing-standard-deviation/ and http://www.jstor.org/stable/1267176 . == Online algorithm ==

Talk:Algorithms for calculating variance: Difference between revisions