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Re: st: mean centering


From   "Airey, David C" <david.airey@vanderbilt.edu>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   Re: st: mean centering
Date   Sun, 20 Jan 2013 23:46:55 +0000

.

> Yes, and it's not bad practice most of the time. 

I picked up in a recent discussion that mean centering used to be a remedy for computational problems related to collinearity, like when you square or cube continuous variables to allow nonlinearity in regression models. However, modern methods like Q-R decomposition makes this an unnecessary concern and today mean centering helps with interpretation only if that.

Anyone agree with this?

-Dave

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