*To*: debian-user@lists.debian.org*Subject*: Re: [OT] Mathematics and the uselessness of numbers (was Re: Help buying Economic Printer)*From*: Ron Johnson <ron.l.johnson@cox.net>*Date*: Wed, 01 Aug 2007 05:41:05 -0500*Message-id*: <46B06341.5030205@cox.net>*In-reply-to*: <46AF5E88.3010107@physik.blm.tu-muenchen.de>*References*: <E0E140FC-F9CF-4F4F-BA92-C4E163FA8B4C@u.washington.edu> <4693F2BB.5050509@cox.net> <20070711012209.GA28986@titan> <4694478D.5010808@cox.net> <20070711030755.GC15180@santiago.connexer.com> <46944B65.4040902@cox.net> <20070711032131.GE15180@santiago.connexer.com> <46944F11.5000900@cox.net> <20070711234401.GE4747@localhost.localdomain> <4696596B.2030607@cox.net> <20070712172519.GI4747@localhost.localdomain> <46AF5E88.3010107@physik.blm.tu-muenchen.de>

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 07/31/07 11:08, Johannes Wiedersich wrote: > [snip] >>> Because people (even, apparently, smart people like you) seem to fixate on >>> that "average" number and think that "because that's the average, that's >>> what the temperature is supposed to be", weather sites should *not* post >>> average, but *should* post the *range* of temperatures 1 STDDEV above and >>> below the average. >> please Ron. I'm fully aware of what an average is and was merely jumping on the "let's >> discuss random weather stuff" band-wagon and having a little fun. > >> sheesh. > >> I agree though that the range of temperatures would be really nice to >> see. The high and low with 1 stddev above and below each would >> actually be useful information. > > Sorry for joining this OT thread. > > Don't get misled by the subject; this has nothing to do with mathematics: > > 1) stddev's only apply, if temperatures would vary statistically and By "statistically", do you mean "evenly"? (It's been a number of decades since I've needed to know more than just the generalities of bell curves, standard deviations, tails, etc.) > would therefore show a Gaussian distribution around a mean value. > Neither is the case. > > 2) If temperatures would vary statistically, it would be enough to give > the stddev, because 'above' and 'below' would be the same value. > > The fact that 'above' and 'below' are generally different values, is a > direct hint that 1) does not apply. This is probably one of the reasons > why meteorologists give mean temperatures in January and July, but no > stddev. I don't know what the year-on-year temperature variability is like in Germany, but here in the US it's quite high. - -- Ron Johnson, Jr. Jefferson LA USA Give a man a fish, and he eats for a day. Hit him with a fish, and he goes away for good! -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFGsGNBS9HxQb37XmcRAsUEAKCreHvA+ivRSeSIr5ElxBuipeYrKwCgmEpJ qi0BYqWapdcP5eVB40DUh/k= =HekY -----END PGP SIGNATURE-----

**References**:**Re: [OT] Mathematics and the uselessness of numbers (was Re: Help buying Economic Printer)***From:*Johannes Wiedersich <johannes@physik.blm.tu-muenchen.de>

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