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RE: st: weight option


From   tashi lama <ltashi32@hotmail.com>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: weight option
Date   Thu, 23 Aug 2012 19:50:18 +0000

In my opinion, that would be opposite of what I would like to have. If I use frequency weights the way you suggested, would it not give more weight to analysts with higher doc_published(since higher doc_published means higher frequency) which is opposite of what I want? I want analysts with more doc_published to have less weight.  I would think may be reciprocal of fweight. May be something like [fweight=1/doc_published] but stata doesn't allow non-integer for fweight. Looks like pweight is closer to what I want. Any ideas?

Thanks 
----------------------------------------
> Subject: Re: st: weight option
> To: statalist@hsphsun2.harvard.edu
> From: pablo.bonilla1234@gmail.com
> Date: Thu, 23 Aug 2012 19:38:52 +0000
>
> I would use frequency weights so Stata will understand that your obs are replicated as many times as the weights says to be.
>
> graph pie hits [fweight=doc_published], over(analyst) ,
>
> Best,
>
> Pablo.
> Sent via BlackBerry from T-Mobile
>
> -----Original Message-----
> From: tashi lama <ltashi32@hotmail.com>
> Sender: owner-statalist@hsphsun2.harvard.edu
> Date: Thu, 23 Aug 2012 19:32:20
> To: <statalist@hsphsun2.harvard.edu>
> Reply-To: statalist@hsphsun2.harvard.eduSubject: st: weight option
>
> Hello all,
>
> The problem is creating a market share of analysts based on the readership views but also that take into account how many documents were published by the analysts. For instance the guy with 20 views on just 2 documents published should have higher market share than the guy who has 25 views on 5 documents published. Say for instance my dataset would look something like this
>
> analyst doc_published hits
> |---------------------------|
> | A 5 25 |
> | B 3 20 |
> | C 1 18 |
> | D 2 20 |
> | E 4 12 |
>
> If I were to draw a pie chart, I would simply do
> graph pie hits, over(analyst)
> This will indeed give me a nice looking pie chart but this doesn't take document published (which is in column 2) into account. However, I want to be able to create a market share of analysts' based on readership hits but also takes document published into account. I have a feeling it has to do something with [weight] option. Could someone please explain which weight should I use and may be why it would be better than others?
> it could be something like this
> graph pie hits [weight=doc_published], over(analyst)
>
> Thanks,
> Tashi
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