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RE: st: another question on the interpretation of rho and atanhrho
From
"Lachenbruch, Peter" <[email protected]>
To
"[email protected]" <[email protected]>
Subject
RE: st: another question on the interpretation of rho and atanhrho
Date
Tue, 8 May 2012 11:21:55 -0700
sorry - I missed that
________________________________________
From: [email protected] [[email protected]] On Behalf Of Nick Cox [[email protected]]
Sent: Tuesday, May 08, 2012 11:20 AM
To: [email protected]
Subject: Re: st: another question on the interpretation of rho and atanhrho
I don't think so. Hyperbolic functions are not trigonometric functions!
To a very good approximation tanh x ~ x for small x.
For the Mickey Mouse tutorial, see
SJ-8-3 pr0041 . Speaking Stata: Corr. with confidence, Fisher's z revisited
(help corrci, corrcii if installed) . . . . . . . . . . . . N. J. Cox
Q3/08 SJ 8(3):413--439
reviews Fisher's z transformation and its inverse, the
hyperbolic tangent, and reviews their use in inference
with correlations
Nick
On Tue, May 8, 2012 at 7:12 PM, Lachenbruch, Peter
<[email protected]> wrote:
> is it possible that we have a radian vs. degree question here? I make that blunder all the time.
David Roodman ([email protected]) [[email protected]]
> -0.244 is not tanh(-2.489), so there must be something wrong with this example.
> Stipulating a 10% significance level, 2 is more correct.
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