B. Burcin Yurtoglu
> 
> I was just curious about how the iweight functions.  I do 
> not have to use it.
> But, still I find it difficult to understand why and the 
> how the number of observations change.
> burcin
The "number of observations" at least with -regress [iw=]- 
appears to be the floor of the sum of the weights. 
Nick 
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