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Re: st: Calculating means not using "collapse"


From   David Greenberg <[email protected]>
To   [email protected]
Subject   Re: st: Calculating means not using "collapse"
Date   Fri, 17 Jan 2003 11:44:34 -0500

It seems to me that if your concern is with the disappearance of the original variables from the data set, one could generate a new variable equal to the old one, and use collapse with the new variable. The original variable will then still be preserved. David Greenberg, Sociology Department, New York University

----- Original Message -----
From: Nirmala Ravishankar <[email protected]>
Date: Friday, January 17, 2003 0:16 am
Subject: st: Calculating means not using "collapse"

> I am a first-time Stata user, and have a relatively basic 
> question.  Is
> there some way to calculate the weighted mean and median of a variable
> without using the "collapse" command?  As part of a program, I 
> need to
> calculate the weighted mean and median to perform other operations 
> on the
> dataset, but using "collapse" clears the original variables from the
> workspace. I tried "egen" but that doesn't allow for weighted means.
> 
> Here are the specifics:  I have household income data for US 1994, 
> fromwhich I want to calculate the median income. Then I want to 
> disaggregatehouseholds by state and calculate the regional 
> medians. Finally, I want to
> calculate the ratio of the regional medians to the national 
> median. Using
> "collapse" to calculate the national median removes the original
> observations from the working space.
> 
> 
> Thanks,
> Nirmala
> 
> 
> 
> 
> 
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