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Date:         Mon, 1 Nov 2004 23:41:32 -0500
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) 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,

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