-h xtsum-
HTH
Martin
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of somsupa Nopprach
Sent: Friday, October 24, 2008 1:34 PM
To: [email protected]
Subject: st: standard deviation
Hi everyone,
my data set is panel data .
I would like to compute standard deviation of one of my variable by industry
and by country at each time. How can i compute it?
the data example is as followed
country ind code panelid period icc1m ICC1
1 870110 8701101 1988 -.2631029 -.2163667
9 870110 8701109 1988 -.2631029
5 870110 8701105 1988 -.2631029 .0071606
6 870110 8701106 1988 -.2631029 -.5801026
4 870110 8701104 1989 -.0319269
8 870110 8701108 1989 -.0319269 .0961042
7 870110 8701107 1989 -.0319269 -1.297983
5 870110 8701105 1989 -.0319269 .6752883
6 870110 8701106 1989 -.0319269 .3688307
I would like to compute standard deviation of ICC1 variable at each period
by industry. I will use the standard deviation as my new time series
variable for each industry.
so, i should get standard deviation of ICC1 of 1988, 1989,.... from
industry 870110 and
industry 870111 and so on.
thank you for your help,
somsupa
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