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Re: st: how to generate mean for a secquence of five year of a variable


From   Oliver Jones <ojones@wiwi.uni-bielefeld.de>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: how to generate mean for a secquence of five year of a variable
Date   Thu, 05 May 2011 16:30:41 +0200

Hi,

I have never used -rolling- and just had a quick look at the help
file of it.

Couldn't -rolling- be used for both possibilities, i.e. calculating
the mean for separate blocks of five years and moving blocks, by
specifying the stepsize(5) option?

Best
Oliver

Am 05.05.2011 16:23, schrieb Nick Cox:
If that's the right diagnosis:

-rolling-

-mvsumm- (SSC)

Nick
n.j.cox@durham.ac.uk

Oliver Jones

ok, now I got it. You want some kind of running-mean.
The function -lowess- has an option to create a new
variable that is a running mean.
BUT, this is not exactly what we want here, because this
mean is calculated at the center of the running window.
We want the mean at the right end of the window.

Am 05.05.2011 15:53, schrieb prakash singh:

yearid	countryid	var1	var2	
1980	1	7.25	
1981	1	8.25		
1982	1	9.5		
1983	1	7.5		
1984	1	7.75	8.05 (mean of first five observation of var1)
...........................................
........................................
2001	1	8.25		
2002	1	9		
2003	1	9.5		
2004	1	8		
2005	1	10	8.95 (mean of last five observation of var1)

similarly for all other country.


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