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Re: st: Create a 'rolling-mean' variable
From
"E. Paul Wileyto" <[email protected]>
To
[email protected]
Subject
Re: st: Create a 'rolling-mean' variable
Date
Thu, 04 Nov 2010 12:32:17 -0400
Try this (if you have no missings):
newvar=sum(oldvar)/_n
P
On 11/4/2010 12:17 PM, Léon Bueckins wrote:
Hi,
this might be a rather simple questions, but I don't get it to work, so help is appreciated.
I try to generate a variable that is simply the mean value of another up to this point in time, so a kind of rolling-mean. Example:
var_x | var_mean
1| 1/1
4 | 5/2
3 | 8/3
7 | 15/4
2 | 17/5
Regards,
Leon
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--
E. Paul Wileyto, Ph.D.
Assistant Professor of Biostatistics
Tobacco Use Research Center
School of Medicine, U. of Pennsylvania
3535 Market Street, Suite 4100
Philadelphia, PA 19104-3309
215-746-7147
Fax: 215-746-7140
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