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st: RE: non-constant Frequency weights

From   Nick Cox <>
To   "''" <>
Subject   st: RE: non-constant Frequency weights
Date   Tue, 26 Oct 2010 18:32:47 +0100

I don't see the connections between these statements. A variable containing frequency weights can vary between observations, in this instance within panels as well as between panels, so that is not a problem in itself. 

Perhaps some particular procedures have more restricted assumptions, but you don't say what they are. 


Stephen O Neill

I am using unbalanced panel data which contains a frequency weight each year. 
However the weight is not constant through time with the result that I cannot 
weight the data using - [fweight = weight] - . I was just wondering if there is 
a simple work around?

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