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Re: regress vs polyfit

From: Freddy López
Subject: Re: regress vs polyfit
Date: Mon, 20 Jun 2011 10:51:13 -0430

what is this help about - "the constant value 1" ?

It would to refer to the 'beta_0' constant in regression analysis.

On Mon, Jun 20, 2011 at 07:15, Thomas Grzybowski
<address@hidden> wrote:
> Hi:
> I am new to octave and want to fit a single regression line to some data.  I
> have been using polyfit, and was looking at regress, but I find regress
> confusing.   From the regress "Help":
>  * `X' is a matrix of regressors, with the first column filled with the
> constant value 1
> I do not understand the help instructions.  My data is simply x,y pairs -
> Thanks,
> Thomas Grzybowski
> _______________________________________________
> Help-octave mailing list
> address@hidden

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