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st: RE: RE: quintiles

From   "Araujo, Edson" <>
To   <>
Subject   st: RE: RE: quintiles
Date   Fri, 7 Mar 2008 13:48:42 -0000

Yes, sure! 
In fact the point is how  to divide de income in 5 groups and then associate the share of the population in each income group. Thanks, 


From: on behalf of Thomas W. Volscho
Sent: Fri 07/03/2008 13:35
Subject: st: RE: quintiles

It sounds as if you want to separate things: Quintile shares vs. % of pop
within a given income bracket or range.

-----Original Message-----
[] On Behalf Of Maarten buis
Sent: Friday, March 07, 2008 8:13 AM
To: stata list
Subject: st: quintiles

--- Edson wrote:
> To calculate income groups (quintile/percentile) if you use the
> command xtile quintile=totconsump, nq(5) stata divides the groups
> according to the population size (each quintile will have 20% of the
> population). What Is the best way to determine the income
> distribution across the sample population (percentage of population
> inside each level of income - like the X% have income between
> $0 - $1500)?

I am not sure how the first and the second part of your question are
related. If you created a variable using -xtile-, representing
quitiles, than your first quitile will contain 20%, the second 20%,
etc. There is no need to determine these proportions, you have created
them to be 20%. (The precise numbers may differ very slightly when the
number of observations isn't exactly divisable by 5, but that should
not worry you.)

Say you have a different income variable called income, than you can
type -tab income-.


Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands

visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434

+31 20 5986715

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