RE: When to do transformation of data?

From: Peter Wright Date: April 24, 2002 technical Source: cognigencorp.com
From: Peter Wright Subject: RE: [NMusers] When to do transformation of data? Date: Wed, 24 Apr 2002 10:51:21 -0700 On the topic of data transformation I have a quick question for the group If I want to fit a model to data transformed to natural log can I do this just in the error block e.g. Y1 = LOG(F) + EPS(1) Y = EXP(Y1) IPRE = F IRES = DV-IPRE IWRE = IRES/IPRE or must I actually transform the data? Peter Wright UCSF

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Apr 23, 2002 Atul Bhattaram Venkatesh When to do transformation of data?
Apr 23, 2002 Steve Charnick Re: When to do transformation of data?
Apr 23, 2002 William Bachman RE: When to do transformation of data?
Apr 23, 2002 Leonid Gibiansky Re: When to do transformation of data?
Apr 23, 2002 Chuanpu Hu RE: When to do transformation of data?
Apr 23, 2002 Lewis B. Sheiner Re: When to do transformation of data?
Apr 23, 2002 Leonid Gibiansky RE: When to do transformation of data?
Apr 23, 2002 Leonid Gibiansky RE: When to do transformation of data?
Apr 23, 2002 William Bachman reasonable equivalent model in the log space
Apr 23, 2002 Chuanpu Hu RE: When to do transformation of data?
Apr 23, 2002 Leonid Gibiansky RE: When to do transformation of data?
Apr 23, 2002 Unknown RE: When to do transformation of data?
Apr 24, 2002 Peter Wright RE: When to do transformation of data?
Apr 29, 2002 Atul Bhattaram Venkatesh When to do transformation of data?
Apr 29, 2002 Mats Karlsson Re: When to do transformation of data?
Apr 29, 2002 Mats Karlsson Re: When to do transformation of data?
Apr 29, 2002 Kenneth Kowalski RE: When to do transformation of data?
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