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Re: st: density plots


From   Maarten Buis <maartenlbuis@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: density plots
Date   Tue, 24 May 2011 19:28:36 +0200

On Tue, May 24, 2011 at 6:44 PM, Debs Majumdar <debs_stata@yahoo.com> wrote:

> I want is an x axis that ranges from 20 to 90 points  and 2 normal curves on it.
>
> One with mean 60 and standard error 2 and the other one with mean 40 and standard error 5.
>
> At last, I'd like you to pull some random values from those distributions
> and superimpose them, e.g. the numbers 1, 2, 3, ... 10 as symbols
> superimposed on top of the normal curves.

*--------------------------- begin example ---------------------------
clear
set obs 100
gen x = rnormal(60,2)
gen y = rnormal(40,5)
cumul x, gen(cx)
cumul y, gen(cy)

twoway function y = normal((x - 60)/2), range(20 90) || ///
       function y = normal((x - 40)/5), range(20 90) || ///
       scatter cx x || scatter cy y
*-------------------------- end example --------------------------------
(For more on examples I sent to the Statalist see:
http://www.maartenbuis.nl/example_faq )

Hope this helps,
Maarten

--------------------------
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen
Germany


http://www.maartenbuis.nl
--------------------------

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