Date:         Mon, 1 Nov 2004 23:41:32 -0500
Reply-To:     Rich.Ulrich@comcast.net
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         Richard Ulrich <Rich.Ulrich@COMCAST.NET>
Subject:      Re: Standard error
Content-Type: text/plain; charset=us-ascii

On 1 Nov 2004 17:36:16 -0800, a320@hotmail.com (a320) wrote:

> Hello,
>
> Consider the regression  Y = Bo + B1X + ... + BnXn
>
> SAS provides the standard error of B1 - SE(B1). If I multiply the B1
> by 0.1, is the SE of 0.1*B1 equal to 0.1*SE(B1)?
>

If I say that a regression shows that my grass grows
6 inches per month with a SE of 1.2,  what is the meaning
of asking about 0.1 times 6?

Do you want to ask about change-of-scale?
Yes,  0.5  feet per month will have a SE of 0.1.

--
Rich Ulrich, wpilib@pitt.edu
http://www.pitt.edu/~wpilib/index.html