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Re: st: Sequence index plots, subpopuations


From   Nick Cox <njcoxstata@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Sequence index plots, subpopuations
Date   Mon, 24 Jan 2011 10:20:46 +0000

Assuming you have a panel data set-up, see for example (while noting
that -runiform()- is now the overt name for the uniform random number
generator)

FAQ     . . . . . . . . . . . . . . . . . . Sampling clusters, not individuals
        . . . . . . . . . . . . . . . . . . . . . .  N. J. Cox and S. Merryman
        5/06    How can I sample clusters, not individuals?

http://www.stata.com/support/faqs/data/sampleby.html

Nick

On Mon, Jan 24, 2011 at 10:14 AM, Sonja Bastin
<bastinsonja@googlemail.com> wrote:

> as I have seen in other researcher's work there must be a possibilty to get
> well comparable sequence index plots for subpopulations containing differing
> numbers of observations.
> For example, I want to compare east and west Germans. My sample contains 956
> West Germans, whereas only 319 East Germans which means in the left graph
> there are 956 sequences displayed, in the right one 319. And as the vertical
> axis however is the same for both graphs the images are difficult to
> compare. I was thinking about drawing a random sample from all west germans,
> containing as many cases as there are east Germans, but with a data set in
> sequence format this is not that easy. Of course, I could draw seperate
> graphs for both subpopulations and display them in the same size, but this
> procedure seems too complicated and not very "fancy". There must be a more
> simple solution as graphs of other authors suggest.
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