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Mar 16 at 18:47 answer added jimbob timeline score: 0
Aug 9, 2017 at 14:05 answer added Mr Tsjolder from codidact timeline score: 5
May 9, 2011 at 13:59 comment added whuber The expression $[X_1, X_2, \dots, X_n]$ could mean many things (although conventionally it would be a vector): I was looking for a clarification.
May 9, 2011 at 13:21 vote accept gallamine
May 9, 2011 at 12:50 history edited gallamine CC BY-SA 3.0
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May 9, 2011 at 12:37 comment added gallamine @whuber which last bracket? "total variance" means the variance of the total dataset.
May 9, 2011 at 12:37 history edited gallamine CC BY-SA 3.0
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May 7, 2011 at 8:37 history edited mpiktas CC BY-SA 3.0
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May 6, 2011 at 20:50 answer added Aniko timeline score: 26
May 6, 2011 at 20:38 comment added whuber What does that last bracket mean? And what do you mean by "total variance"? Is it anything other than the variance of the combined dataset?
May 6, 2011 at 20:37 history edited whuber CC BY-SA 3.0
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May 6, 2011 at 20:29 comment added user4500 Is this the same as my question here: mathoverflow.net/questions/64120/…
May 6, 2011 at 20:27 history asked gallamine CC BY-SA 3.0