st: RE: Problems to retrieve poverty lines after povdeco (+ some questions) (Q3)

["Nick Cox" <n.j.cox@durham.ac.uk>]

Evidence please. 

Nick 
n.j.cox@durham.ac.uk 
> 
> - My third question: I have two different results when I do 
> the following (with
> or without weights):
>   bys(V1): su V2
>   collapse (mean) V2, by(V1)
> 
> The means in collapse are greater (rounded?). What is happening here?
> 

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