Date: Wed, 30 Jul 1997 16:58:50 GMT
Reply-To: Jay Weedon <j_weedon@ESCAPE.COM>
Sender: "SAS(r) Discussion" <SAS-L@UGA.CC.UGA.EDU>
From: Jay Weedon <j_weedon@ESCAPE.COM>
Subject: Re: exponential regression
Content-Type: text/plain; charset=us-ascii
On Wed, 30 Jul 1997 06:27:50 -0700, "Joe" <Joe_Harris@msn.com> wrote:
>I don't know a thing about SAS, but I do know a little stats, and I think
>you should take the natural log of your equation:
>y = a*(b)^x ---> ln(y) = ln(a) + ln(b)*x
>Then you can find ln(a), and ln(b) by linear regression.
OK if you want a multiplicative error term. Otherwise you might want to look
at PROC NLIN.