# Re: [R] Orthogonal regression

Date: Sat 09 Jul 2005 - 00:16:30 EST

This topic has come up a few times recently, so it must be 'in the wind'

these days. Depending on what approach you take and what area you are coming
from, it goes under the names Orthogonal [Distance] Regression, Total Least
Squares, Errors in Variables, Deming Regression. The middle two encompass
much more in statistics terms (and I don't know what Deming did for sure.)

If you have just two variables and you assume they are observed without error, then the regression slope is just the ratio of the standard deviations with the sign of the correlation coefficient, and the line passes
through the means. There are assumptions about the errors that will produce
the same result as a 'best linear fit,' but these assumptions about the errors may not fit your situation. Do some reading in the TLS / EIV arena to
see if you really want bald ODR.

HTH,
David L. Reiner

> -----Original Message-----
> From: r-help-bounces@stat.math.ethz.ch [mailto:r-help-
> bounces@stat.math.ethz.ch] On Behalf Of Vito Ricci
> Sent: Friday, July 08, 2005 4:14 AM
> To: r-help@stat.math.ethz.ch
> Subject: [R] Orthogonal regression
>
> Dear R-Users,
>
> is there any statement to fit a orthogonal regression
> in R environment?
>
>
> Best regards,
>
> Vito
>
>
> Diventare costruttori di soluzioni
> Became solutions' constructors
>
> "The business of the statistician is to catalyze
> the scientific learning process."
> George E. P. Box
>
> "Statistical thinking will one day be as necessary for efficient

> citizenship as the ability to read and write"
> H. G. Wells
>
> Top 10 reasons to become a Statistician
>
> 1. Deviation is considered normal
> 2. We feel complete and sufficient
> 3. We are 'mean' lovers
> 4. Statisticians do it discretely and continuously
> 5. We are right 95% of the time
> 6. We can legally comment on someone's posterior distribution
> 7. We may not be normal, but we are transformable
> 8. We never have to say we are certain
> 9. We are honestly significantly different
> 10. No one wants our jobs
>
>
> Visitate il portale http://www.modugno.it/
> e in particolare la sezione su Palese
> http://www.modugno.it/archivio/palesesanto_spirito/
>
> ______________________________________________
> R-help@stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help