Mail Archive Search: <+subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*var$x$\s+vs\s+E\{x\^2\]\s+\-\s+\[E\{x\}\]\^2\s*$/>

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*var$x$\s+vs\s+E\{x\^2\]\s+\-\s+\[E\{x\}\]\^2\s*$/: 2 ]

Total 2 documents matching your query.

1. var(x) vs E{x^2] - [E{x}]^2 (score: 1): Author: John Fennick <jhf2@bellsouth.net>; Date: Mon, 22 Jan 2007 23:13:02 -0500; Hi Group, Can anyone explain the vast differences between the Variance.A and Variance.B or Variance.C below? From the last 4 calls, my problem appears to be in the x^2 terms. Am I just having a bad d; /archives/html/s-news/2007-01/msg00036.html (7,455 bytes)
2. Re: var(x) vs E{x^2] - [E{x}]^2 (score: 1): Author: <Bill.Venables@csiro.au>; Date: Tue, 23 Jan 2007 16:04:13 +1000; The reason is that the density is not the appropriate weight to use - you need some kind of estimate of the probability. Here is one way to show the near equivalence, computationally (using S-PLUS 8.; /archives/html/s-news/2007-01/msg00037.html (9,770 bytes)

Current List: 1 - 2
Page: [1]